How to wire a serial cable for a Solartron 7151
I'm trying to communicate with a Solartron 7151 using RS232 and failing.
I've made up a cable DB9 to DB15 wired straight through based on the information on page 6.6 of the user manual which shows the pin assignments of the DB15 connector on the back of the DMM.
DB9 Pin 1 DCD not connected
DB9 Pin 2 RxD to DB15 Pin 3
DB9 Pin 3 TxD to DB15 Pin 2
DB9 Pin 4 DTR to DB15 Pin 15
DB9 Pin 5 GND to DB15 Pin 7
DB9 Pin 6 DSR not connected
DB9 Pin 7 RTS to DB15 Pin 4
DB9 Pin 8 CTS to DB15 Pin 5
DB9 Pin 9 RI not connected
I didn't connect DB15 Pin 10 to anything, as there is nothing on a DB9 that provides Receive Clock - all my serial ports are DB9.
Unfortunately it doesn't work.
If anyone knows how it should be wired, please could they let me know?
Thanks
Dave
Hmmmm I may be getting somewhere. but not quite sure where.
I swapped Tx and Rx, RTS and CTS so I had a very basic null-modem connection.
With the DIP switches set for 9600 baud, Space Parity and 2 stop bits.
I set Hyperterminal up for 9600,8,S,2
When I connect I now get output from the meter, but it is garbage.
Knpxpywpp@6
knpxtwvyp@@ KNpxxtvtp``6@ kNpyrpqtp@6@
kNpyututp@@ KNpyypvup@6 KNqpruuyp@6`
kNqpvpwwp``6@
If I set hyperterminal to any other settings I get nothing at all.
This almost sounds like the problem that people who use TTL serial have with inverted logic levels.
The problem is identical if I try with another 7151.
Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge
Sent: 14 April 2012 14:24
To: 'Discussion of precise voltage measurement'
Subject: [volt-nuts] How to wire a serial cable for a Solartron 7151
I'm trying to communicate with a Solartron 7151 using RS232 and failing.
I've made up a cable DB9 to DB15 wired straight through based on the information on page 6.6 of the user manual which shows the pin assignments of the DB15 connector on the back of the DMM.
DB9 Pin 1 DCD not connected
DB9 Pin 2 RxD to DB15 Pin 3
DB9 Pin 3 TxD to DB15 Pin 2
DB9 Pin 4 DTR to DB15 Pin 15
DB9 Pin 5 GND to DB15 Pin 7
DB9 Pin 6 DSR not connected
DB9 Pin 7 RTS to DB15 Pin 4
DB9 Pin 8 CTS to DB15 Pin 5
DB9 Pin 9 RI not connected
I didn't connect DB15 Pin 10 to anything, as there is nothing on a DB9 that provides Receive Clock - all my serial ports are DB9.
Unfortunately it doesn't work.
If anyone knows how it should be wired, please could they let me know?
Thanks
Dave
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and follow the instructions there.
Hi Dave,
bigendian-littlendian problem perhaps?
MK
From: david.partridge@perdrix.co.uk
To: volt-nuts@febo.com
Date: Sat, 14 Apr 2012 18:19:58 +0100
Subject: Re: [volt-nuts] How to wire a serial cable for a Solartron 7151
Hmmmm I may be getting somewhere. but not quite sure where.
I swapped Tx and Rx, RTS and CTS so I had a very basic null-modem connection.
With the DIP switches set for 9600 baud, Space Parity and 2 stop bits.
I set Hyperterminal up for 9600,8,S,2
When I connect I now get output from the meter, but it is garbage.
Knpxpywpp@6
knpxtwvyp@@ KNpxxtvtp``6@ kNpyrpqtp@6@
kNpyututp@@ KNpyypvup@6 KNqpruuyp@6`
kNqpvpwwp``6@
If I set hyperterminal to any other settings I get nothing at all.
This almost sounds like the problem that people who use TTL serial have with inverted logic levels.
The problem is identical if I try with another 7151.
Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge
Sent: 14 April 2012 14:24
To: 'Discussion of precise voltage measurement'
Subject: [volt-nuts] How to wire a serial cable for a Solartron 7151
I'm trying to communicate with a Solartron 7151 using RS232 and failing.
I've made up a cable DB9 to DB15 wired straight through based on the information on page 6.6 of the user manual which shows the pin assignments of the DB15 connector on the back of the DMM.
DB9 Pin 1 DCD not connected
DB9 Pin 2 RxD to DB15 Pin 3
DB9 Pin 3 TxD to DB15 Pin 2
DB9 Pin 4 DTR to DB15 Pin 15
DB9 Pin 5 GND to DB15 Pin 7
DB9 Pin 6 DSR not connected
DB9 Pin 7 RTS to DB15 Pin 4
DB9 Pin 8 CTS to DB15 Pin 5
DB9 Pin 9 RI not connected
I didn't connect DB15 Pin 10 to anything, as there is nothing on a DB9 that provides Receive Clock - all my serial ports are DB9.
Unfortunately it doesn't work.
If anyone knows how it should be wired, please could they let me know?
Thanks
Dave
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Yeah could be the bit order in the bytes, but how to tell one or the other to accommodate that? If I need a different terminal program then please point me in the right direction.
I thought serial comms always sent the bits of a byte in the same order (high bit first I think).
Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of m k
Sent: 14 April 2012 19:06
To: volt-nuts@febo.com
Subject: Re: [volt-nuts] How to wire a serial cable for a Solartron 7151
Hi Dave,
bigendian-littlendian problem perhaps?
MK
From: david.partridge@perdrix.co.uk
To: volt-nuts@febo.com
Date: Sat, 14 Apr 2012 18:19:58 +0100
Subject: Re: [volt-nuts] How to wire a serial cable for a Solartron
7151
Hmmmm I may be getting somewhere. but not quite sure where.
I swapped Tx and Rx, RTS and CTS so I had a very basic null-modem connection.
With the DIP switches set for 9600 baud, Space Parity and 2 stop bits.
I set Hyperterminal up for 9600,8,S,2
When I connect I now get output from the meter, but it is garbage.
Knpxpywpp@6
knpxtwvyp@@ KNpxxtvtp``6@ kNpyrpqtp@6@
kNpyututp@@ KNpyypvup@6 KNqpruuyp@6`
kNqpvpwwp``6@
If I set hyperterminal to any other settings I get nothing at all.
This almost sounds like the problem that people who use TTL serial have with inverted logic levels.
The problem is identical if I try with another 7151.
Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com]
On Behalf Of David C. Partridge
Sent: 14 April 2012 14:24
To: 'Discussion of precise voltage measurement'
Subject: [volt-nuts] How to wire a serial cable for a Solartron 7151
I'm trying to communicate with a Solartron 7151 using RS232 and failing.
I've made up a cable DB9 to DB15 wired straight through based on the information on page 6.6 of the user manual which shows the pin assignments of the DB15 connector on the back of the DMM.
DB9 Pin 1 DCD not connected
DB9 Pin 2 RxD to DB15 Pin 3
DB9 Pin 3 TxD to DB15 Pin 2
DB9 Pin 4 DTR to DB15 Pin 15
DB9 Pin 5 GND to DB15 Pin 7
DB9 Pin 6 DSR not connected
DB9 Pin 7 RTS to DB15 Pin 4
DB9 Pin 8 CTS to DB15 Pin 5
DB9 Pin 9 RI not connected
I didn't connect DB15 Pin 10 to anything, as there is nothing on a DB9 that provides Receive Clock - all my serial ports are DB9.
Unfortunately it doesn't work.
If anyone knows how it should be wired, please could they let me know?
Thanks
Dave
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Nope low order bit first ...
D.
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge
Sent: 14 April 2012 21:30
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] How to wire a serial cable for a Solartron 7151
Yeah could be the bit order in the bytes, but how to tell one or the other to accommodate that? If I need a different terminal program then please point me in the right direction.
I thought serial comms always sent the bits of a byte in the same order (high bit first I think).
Dave
On 04/14/2012 12:19 PM, David C. Partridge wrote:
Hmmmm I may be getting somewhere. but not quite sure where.
I swapped Tx and Rx, RTS and CTS so I had a very basic null-modem connection.
With the DIP switches set for 9600 baud, Space Parity and 2 stop bits.
I set Hyperterminal up for 9600,8,S,2
When I connect I now get output from the meter, but it is garbage.
Knpxpywpp@6
knpxtwvyp@@ KNpxxtvtp``6@ kNpyrpqtp@6@
kNpyututp@@ KNpyypvup@6 KNqpruuyp@6`
kNqpvpwwp``6@
If I set hyperterminal to any other settings I get nothing at all.
This almost sounds like the problem that people who use TTL serial have with inverted logic levels.
The problem is identical if I try with another 7151.
Just a stab in the dark here - perhaps ASCII / HEX interpretation?
I know with cutecom on Linux there is an option to deal directly in HEX. If it
is not set correctly (for example, when talking to an FEI 5680A rubidium
frequency standard) you do get "garbage".
Hope this helps.
--
Bob Smither, Ph.D. smither@c-c-i.com
---==
The Three Great Lies:
- Your check is in the mail.
- I'll respect you in the morning.
- We're from the government and we are here to help you.
---==
Hi Dave,
Two more thoughts, could it be that the PC serial is not driving to legal RS232 Volts, put a scope on and look at all the signals.
OR it could be a problem that bit me a few years ago, I had some kit that was RS232 and then the replacement PC did not come with a seriaal port. I had to buy an USB to serial adaptor, but it didnt work, some forum hunting found a model that was more reliable.
MK
From: david.partridge@perdrix.co.uk
To: volt-nuts@febo.com
Date: Sat, 14 Apr 2012 18:19:58 +0100
Subject: Re: [volt-nuts] How to wire a serial cable for a Solartron 7151
Hmmmm I may be getting somewhere. but not quite sure where.
I swapped Tx and Rx, RTS and CTS so I had a very basic null-modem connection.
With the DIP switches set for 9600 baud, Space Parity and 2 stop bits.
I set Hyperterminal up for 9600,8,S,2
When I connect I now get output from the meter, but it is garbage.
Knpxpywpp@6
knpxtwvyp@@ KNpxxtvtp``6@ kNpyrpqtp@6@
kNpyututp@@ KNpyypvup@6 KNqpruuyp@6`
kNqpvpwwp``6@
If I set hyperterminal to any other settings I get nothing at all.
This almost sounds like the problem that people who use TTL serial have with inverted logic levels.
The problem is identical if I try with another 7151.
Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of David C. Partridge
Sent: 14 April 2012 14:24
To: 'Discussion of precise voltage measurement'
Subject: [volt-nuts] How to wire a serial cable for a Solartron 7151
I'm trying to communicate with a Solartron 7151 using RS232 and failing.
I've made up a cable DB9 to DB15 wired straight through based on the information on page 6.6 of the user manual which shows the pin assignments of the DB15 connector on the back of the DMM.
DB9 Pin 1 DCD not connected
DB9 Pin 2 RxD to DB15 Pin 3
DB9 Pin 3 TxD to DB15 Pin 2
DB9 Pin 4 DTR to DB15 Pin 15
DB9 Pin 5 GND to DB15 Pin 7
DB9 Pin 6 DSR not connected
DB9 Pin 7 RTS to DB15 Pin 4
DB9 Pin 8 CTS to DB15 Pin 5
DB9 Pin 9 RI not connected
I didn't connect DB15 Pin 10 to anything, as there is nothing on a DB9 that provides Receive Clock - all my serial ports are DB9.
Unfortunately it doesn't work.
If anyone knows how it should be wired, please could they let me know?
Thanks
Dave
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and follow the instructions there.
You could try RealTerm, I've used it with win XP,
it permits to have much more control on signals and data.
Fabio.
"David C. Partridge" david.partridge@perdrix.co.uk ha scritto:
Yeah could be the bit order in the bytes, but how to tell one or the
other to accommodate that? If I need a different terminal program
then please point me in the right direction.
I thought serial comms always sent the bits of a byte in the same
order (high bit first I think).
Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com]
On Behalf Of m k
Sent: 14 April 2012 19:06
To: volt-nuts@febo.com
Subject: Re: [volt-nuts] How to wire a serial cable for a Solartron 7151
Hi Dave,
bigendian-littlendian problem perhaps?
MK
From: david.partridge@perdrix.co.uk
To: volt-nuts@febo.com
Date: Sat, 14 Apr 2012 18:19:58 +0100
Subject: Re: [volt-nuts] How to wire a serial cable for a Solartron
7151
Hmmmm I may be getting somewhere. but not quite sure where.
I swapped Tx and Rx, RTS and CTS so I had a very basic null-modem
connection.
With the DIP switches set for 9600 baud, Space Parity and 2 stop bits.
I set Hyperterminal up for 9600,8,S,2
When I connect I now get output from the meter, but it is garbage.
Knpxpywpp@6
knpxtwvyp@@ KNpxxtvtp``6@ kNpyrpqtp@6@
kNpyututp@@ KNpyypvup@6 KNqpruuyp@6`
kNqpvpwwp``6@
If I set hyperterminal to any other settings I get nothing at all.
This almost sounds like the problem that people who use TTL serial
have with inverted logic levels.
The problem is identical if I try with another 7151.
Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com]
On Behalf Of David C. Partridge
Sent: 14 April 2012 14:24
To: 'Discussion of precise voltage measurement'
Subject: [volt-nuts] How to wire a serial cable for a Solartron 7151
I'm trying to communicate with a Solartron 7151 using RS232 and failing.
I've made up a cable DB9 to DB15 wired straight through based on
the information on page 6.6 of the user manual which shows the pin
assignments of the DB15 connector on the back of the DMM.
DB9 Pin 1 DCD not connected
DB9 Pin 2 RxD to DB15 Pin 3
DB9 Pin 3 TxD to DB15 Pin 2
DB9 Pin 4 DTR to DB15 Pin 15
DB9 Pin 5 GND to DB15 Pin 7
DB9 Pin 6 DSR not connected
DB9 Pin 7 RTS to DB15 Pin 4
DB9 Pin 8 CTS to DB15 Pin 5
DB9 Pin 9 RI not connected
I didn't connect DB15 Pin 10 to anything, as there is nothing on a
DB9 that provides Receive Clock - all my serial ports are DB9.
Unfortunately it doesn't work.
If anyone knows how it should be wired, please could they let me know?
Thanks
Dave
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I had a syuggestion from a guy at Ametek to try Parity None even though the 7151 is set to parity "Space".
CESTART AT 15.48.24 ON 25.01.00 VERSION BB.BA CAL GOOD
+.1314170 V DC
+.1345240 V DC
+.1375090 V DC
+.1404000 V DC
+.1431960 V DC
+.1459540 V DC
+.1487910 V DC
+.1516270 V DC
+.1544780 V DC
+.1573250 V DC
+.1601460 V DC
+.1629090 V DC
Yes!
Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of Fabio Eboli
Sent: 15 April 2012 07:01
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] How to wire a serial cable for a Solartron 7151
You could try RealTerm, I've used it with win XP, it permits to have much more control on signals and data.
Fabio.
"David C. Partridge" david.partridge@perdrix.co.uk ha scritto:
Yeah could be the bit order in the bytes, but how to tell one or the
other to accommodate that? If I need a different terminal program
then please point me in the right direction.
I thought serial comms always sent the bits of a byte in the same
order (high bit first I think).
Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com]
On Behalf Of m k
Sent: 14 April 2012 19:06
To: volt-nuts@febo.com
Subject: Re: [volt-nuts] How to wire a serial cable for a Solartron
7151
Hi Dave,
bigendian-littlendian problem perhaps?
MK
From: david.partridge@perdrix.co.uk
To: volt-nuts@febo.com
Date: Sat, 14 Apr 2012 18:19:58 +0100
Subject: Re: [volt-nuts] How to wire a serial cable for a Solartron
7151
Hmmmm I may be getting somewhere. but not quite sure where.
I swapped Tx and Rx, RTS and CTS so I had a very basic null-modem
connection.
With the DIP switches set for 9600 baud, Space Parity and 2 stop bits.
I set Hyperterminal up for 9600,8,S,2
When I connect I now get output from the meter, but it is garbage.
Knpxpywpp@6
knpxtwvyp@@ KNpxxtvtp``6@ kNpyrpqtp@6@
kNpyututp@@ KNpyypvup@6 KNqpruuyp@6`
kNqpvpwwp``6@
If I set hyperterminal to any other settings I get nothing at all.
This almost sounds like the problem that people who use TTL serial
have with inverted logic levels.
The problem is identical if I try with another 7151.
Dave
-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com]
On Behalf Of David C. Partridge
Sent: 14 April 2012 14:24
To: 'Discussion of precise voltage measurement'
Subject: [volt-nuts] How to wire a serial cable for a Solartron 7151
I'm trying to communicate with a Solartron 7151 using RS232 and failing.
I've made up a cable DB9 to DB15 wired straight through based on the
information on page 6.6 of the user manual which shows the pin
assignments of the DB15 connector on the back of the DMM.
DB9 Pin 1 DCD not connected
DB9 Pin 2 RxD to DB15 Pin 3
DB9 Pin 3 TxD to DB15 Pin 2
DB9 Pin 4 DTR to DB15 Pin 15
DB9 Pin 5 GND to DB15 Pin 7
DB9 Pin 6 DSR not connected
DB9 Pin 7 RTS to DB15 Pin 4
DB9 Pin 8 CTS to DB15 Pin 5
DB9 Pin 9 RI not connected
I didn't connect DB15 Pin 10 to anything, as there is nothing on a
DB9 that provides Receive Clock - all my serial ports are DB9.
Unfortunately it doesn't work.
If anyone knows how it should be wired, please could they let me know?
Thanks
Dave
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In message 211E59CC6EA042CDABB7E1E7DBE306EF@APOLLO, "David C. Partridge" writes:
I had a syuggestion from a guy at Ametek to try Parity None even
though the 7151 is set to parity "Space".
Usually you only use parity 'space' with 7 bits, to make it look like
8 bits + no parity.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.