| Applies To: |
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| Summary: |
| Some common PSDIRECT communication problems. |
| Solution: |
| 1. With the ISO protocol check to
see that the Siemens ISO transport is installed, I see the message
in the bottom window “failed to open ISO channel 1”
The ISO transport is not correctly installed OR there may be a problem in the registry and the driver is not using the correct Ethernet card. 2. The read TSAP setting defaults to “R=0;S=2” which means read the CPU in Rack 0 Slot 2. This is Correct for an S7-300. On a S7-400 with 2 slot power supply, meaning the CPU is in Slot 3, this should be R=0;S=3. Note: 3. If you have 2 CitectSCADA’s communicating to a S7-300 the third CitectSCADA connection will fail. By default the S7-300 has 8 communication channels: 2 for step 7, 2 for SCADA, 4 for PLC-PLC. This configuration can be changed in later model CPUs. The S7-400 seldom encounters this problem because it has 8 connections 4. If you see the message “Failed to open ISO channel 1” , you need to install the ISO transport layer (read the driver help document - setting up the PC). In addition you need to make sure the driver is using the correct ethernet card/adapter Special considerations for S5 & TI communicationsThe S5 Setup is VERY specific, & more complex than S7 setup. You have to setup EXACTLY as recommend in the driver manual & examples. The chances of it working with a differing configuration for another software setup is slim. Luckily you can add additional Connection "Jobs" to the CP card & run the new system in parallel. Note: - In the driver help file read the section "Setting up the hardware" where there are screenshots & step by step instructions. - in the driver zip file there are example PLC & CP card configs in the directory "PLC" |
| Keywords: |
| PSDIRECT communication problems, S7,S5,TI,CP143,CP1430,CP1434,SINEC,TF |
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