1203-USB converter cable rockwell

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letranlong
Posts: 79
Joined: Tue Jul 15, 2014 5:05 pm

1203-USB converter cable rockwell

Post by letranlong » Mon Sep 29, 2014 10:24 pm

please help me
dear everybody
I'm not yes 1203-USB converter cable, types: 1203-USB converter cable connecting for Guardmaster MSR57P Speed
Monitoring Safety Relay. to connect computer which MSR57P control
because my computer of me. it's haven't RS485 port
i see USB to RS485 converter cable, of Rockwell production it's too expensice.
i have little money, not enough to buy USB to RS485 cable of Rockwell production
can you help me
can you speak for me know.
can I use USB to RS485 converter cable of manufacturers different ? fix connect with PLC to PC ??
http://goo.gl/32z3pa
Last edited by letranlong on Thu Feb 05, 2015 11:12 am, edited 1 time in total.

CodeSeaker
Posts: 1
Joined: Mon Nov 21, 2011 2:38 pm

Re: 1203-USB converter cable rockwell

Post by CodeSeaker » Sun Oct 05, 2014 12:02 am

From what I read its not 485 its RS232

http://literature.rockwellautomation.co ... _-en-p.pdf

letranlong
Posts: 79
Joined: Tue Jul 15, 2014 5:05 pm

Re: 1203-USB converter cable rockwell

Post by letranlong » Sun Oct 05, 2014 11:06 am

CodeSeaker wrote:From what I read its not 485 its RS232

http://literature.rockwellautomation.co ... _-en-p.pdf
thank you very much
following you speking with me it means, I can't use 485 its RS232 different


http://goo.gl/32z3pa
Last edited by letranlong on Thu Feb 05, 2015 11:11 am, edited 1 time in total.

neuhauser
Posts: 70
Joined: Fri Oct 15, 2010 9:18 pm

Re: 1203-USB converter cable rockwell

Post by neuhauser » Wed Oct 08, 2014 6:40 pm

Not trying to step on anyone's toes here but the 1203-USB is actually a USB 2.0 adapter. It replaced the 1203-232 which was the 9 pin rs-232 to Allen-Bradley scanbus adapter.
The 1203-usb has the older round din plug that fit the 1305 - 1395 drives and the powerflex 40 - 400 and 70 -700 drives. It also has a 8 pin rj45 cable that adapts to the newer powerflex 720 -755 drives. Both the serial and the USB adapters are powered on the drive side not by the pc. I believe it's a serial to modbus 485 (possibly with AB protocol on top) adapter. The powerflex 4 - 400 drives are modbus unless you add a comm card. Some of the other drives include modbus also.

I've seen a few slc500 plc's taken down by somebody plugging the 8 pin cable in the processor DH-485 port. Also not good for your ethernet or the 1203 if you plug it into a switch. Rockwell didn't really think that one through by using that connector.

letranlong
Posts: 79
Joined: Tue Jul 15, 2014 5:05 pm

Re: 1203-USB converter cable rockwell

Post by letranlong » Thu Feb 05, 2015 11:12 am

neuhauser wrote:Not trying to step on anyone's toes here but the 1203-USB is actually a USB 2.0 adapter. It replaced the 1203-232 which was the 9 pin rs-232 to Allen-Bradley scanbus adapter.
The 1203-usb has the older round din plug that fit the 1305 - 1395 drives and the powerflex 40 - 400 and 70 -700 drives. It also has a 8 pin rj45 cable that adapts to the newer powerflex 720 -755 drives. Both the serial and the USB adapters are powered on the drive side not by the pc. I believe it's a serial to modbus 485 (possibly with AB protocol on top) adapter. The powerflex 4 - 400 drives are modbus unless you add a comm card. Some of the other drives include modbus also.

I've seen a few slc500 plc's taken down by somebody plugging the 8 pin cable in the processor DH-485 port. Also not good for your ethernet or the 1203 if you plug it into a switch. Rockwell didn't really think that one through by using that connector.
thank you very much
https://goo.gl/4I8mBf

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