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I wish to send a temperature set-point from an Allen-Bradley SLC 5/05 (Ethernet) PLC to a water temperature controller and read back the actual value. [ PLC ]<---------->[ Temperature Controller ] The temperature controller RS485 comms supports protocols for moulding machines from Arburg, Battenfeld, Billion, Demag, Dr. Boy, Engel, Frech, Husky, KraussMaffei, Netstal, Sumitomo, Toyo and ‘Spezial’. They have given me the details for Engel’s Interface Protocol P2 which is 8-bit ASCII. Question: What's my best option for this? Buy a BASIC module? [ PLC ] [bASIC]<---serial------->[ Temperature Controller ] Use the serial programming port directly? [ PLC ]<---serial------->[ Temperature Controller ] Use an Ethernet message to some external programmable serial server? [ PLC ]<----Ethernet---->[serial Server]<---serial--->[ Temperature Controller ] I've modified and debugged A-B PLC code but I'm not very familiar with their hardware. Many thanks.

Hi All, I have problem about programming serial module Mitsubishi PLC using QJ71C24N. If I unconnect the cable from the module and connect again it show SIO error and the communication become lost or not sending data again. so i have to restart the PLC to make it normal again. Any other solution for solve this error without restart the PLC? Thanks Husanto

Hello guys, actually I am new to this Omron PLC. but i have small project to transmit a command to the GSM modem via the RS232 port so it can trigger the modem to send text msg. Can you show me the steps/guide/sample program to accomplish this program coding? I already read some topic in this forum regarding to this PLC RS232 port but still cant get the ideas when to create the ladder program. PLC Type : CJ1H (CPU65H) - RS232 port First input to trigger the GSM send text msg: AT+CMGS="+YOUR HP NUMBER" Second input to trigger GSM send text msg: YOUR TEXT MSG CONTAINS (Ctrl+z to send) Many Thanks, AlexB

File Name: ModbusRTUdemos.zip File Submitter: RussB File Submitted: 17 Nov 2014 File Category: PLC Sample Code There are two Proficy ME projects in the zip file one for VersaMax and one setup for 90-30 CPU364 but is the same for all of the 90-30 processors, but read the Manual GFK-2220 to get the correct port information for your CPU and configuration. They are both working and well documented. They were done quite a while ago but I do not recall what version of PME is needed to open them. It is my recommendation that we all use the latest version. Good luck and have fun with it. R~ <))>( Click here to download this file