brewer

Can you upload to a RS Logix on your RS232?  If you can do this you would be able to find out what the I/P address is set in the PLC.  Once you know this you can set your laptop to be on the same network and you should be able to see it then.

Set you o/p in your SCP to O:5.0 and check to see if you a scanning that logic.  The math in the SCP is not correct.  Your input is within range while you output is outside the Scaled Max

Under the configuration of the Card see the attached two screen shots. Typically the alarms are disabled by default.  Did you try any of the other scaling methods and change the signal generator to see if the value changes. If you are getting a reading of 3,200 and it is not changing that would tell me the card is seeing 4mA

What version of software are you using?  When using configuration of Engineering Units the range is 3,200 to 21,000 for 4-20mA.  Is the channel enabled? Are the alarms disabled? If the alarms are enabled that could limit your channel.

I have attached Screen Shots of the Communication Set-up ML Channel 0.bmp

L32 Serial.bmp L32 System Protocol.bmp

Serial Communications L32E REv 20.19 DF1 Radio Modem      

The master controller is a ML1100 Series B.  The controller it is having trouble communicating to a Compct Logix L5332E .  I am not doing error tracking yet but I would guess I am getting 1 out of every 3 successfully.  All the other controllers are communicating with are ML1100.   I just seems odd that I am getting messages through  so my config should be ok.   I have dropped the time out from 5 to 1 in the MSG instruction and my poll is better but that's just because the timeouts are finishing sooner.  I am only reading 20 registers per instructions.

I have a SCADA system communication over serial radios and to one of my site I am getting a Error Message in my MSG Instruction "Hex 37" MSG timeout in local Processor".  The odd thing is i have communication with this site.  I am only running one message at a time and cascading through the messages.  Some of the messages do get through. My message time out is set to 5 and am having this issue with three messages to the same PLC.  So it is slowing my system down.

Once you are connected to the PLC  in RS Logix got to channel configuration of your controller make sure you i/p address is there. Under Protocol Control and uncheck BOOTP Enable and DHCP Enable. Make sure you I/P address is set.        

The logic scans top to bottom and left to right.  The 11 columns is the most you can go in modicon ladder logic.  If you need more you can go down to the next network and continue. but you have to repeat the register you are working with. Not sure if this helps.

I have an application with a ML1100 Controller which I a trying to communicate to a Kohler Generator.  The generator Talks Modbus TCP and there is a Prosoft Gateway PLC32-EIP-MBTCP.  This gateway will convert my information to Ethernet I/P but it will be in a 4x register format.  Is there a way in the ML1100 to enable Modbus TCP like the ML1400?  or can I read this with a MSG instruction.  Thanks

I am looking for a solution to connect a PC to a modbus plus network for my HMI.  The old option was to use an SA85 card but is there something better.  Ideally ethernet I/P to Modbus Plus Converter if there is such a thing.  Does anyone have a recommendation that they have used.  

Thanks  I ended up doing a similar network in Ladder to get what I needed.  I agree that they should have kept the SCP in ladder.

Is there a simple instruction where I can fill in a table and do a look-up based on a value.  I have a airflow meter that Pressure correlates to Airflow but it is non linear.  I have 11 pressures that equal 11 flows. Using RSLogix 5000 V20.04 Ladder logic only, no language pack. Thanks