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  1. I have a very old Honeywell controller that only supports an ASCII protocol and another DMCS protocol (proprietary to Honeywell). I am using this manual: http://www.amarketplaceofideas.com/wp-content/uploads/2019/07/51-51-25-35h1.pdf and Hyperterminal "Send a text file" function to try to send an ASCII command to the controller. My command looks like this: 02,0204,64,11,128,0,CR LF When I do this in Hyperterminal I get no apparent response. My hypothesis is I am not sending the correct formatted ASCII. Does anyone know what the correct format might be?
  2. Discrepancy TCP modbus reading

    Hello, i have a curios problem in a modbus tcp reading from a client.  The HC900's answer for the variable 20 (holding register 6375) is clear in the Hybrid Control Designer (the variabile is a simple counter of flow gas counter). The ammount of value is incremented every pulse from a digital input.  But when i send the request from a client modbus, the value's variable is different (completely). For example the value is frozen from this morning, probably when the machine started up.     The others value read directly from  analog inputs are correct. Only this value elaborate from some blocks show this problem. I can't understand the cpu's logic for elaboration the exchange area memory modbus.   Best regards, Ennio .
  3. honeywell

    hello every body i need software for hc900c70 honeywell where can i get it? 
  4. I want to establish Ethernet IP communication between the following PLC CPUs. Schneider Electric - BMEP582040 Honeywell - ControlEdge UOC CPU900-CP1. Where the Schneider must be master and Honeywell must ne adapter. Let me know if anyone have done this or can help me to do so.
  5. Honeywell HC900

    I am having trouble with a HC900 C50 CPU. It’s connected to a hakki HMI and on certain instruction performed on the screen it faults out the CPU. I have 3 strobes on the led which in the manual indicates a CPU prefetch abort error. It says to replace the CPU which I have done but the fault occurs on the new one too. I have replaced the HMI and comms cable between them but nothing has helped stop the fault occurring. Any ideas on next actions welcome 
  6. Honeywell Experion SCADA

    I haven't used Experion before, nor do I have a licence or access to a download of the application. As such I want to know how limited an unlicensed version of the product is. Is it like Citect where you may develop graphics but need a license for runtime, or is it like FTView where you need a license just to open the application? Thanks in advance