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I can communicate to PLC Momentum processor 1760 00 with ProWorx Nxt connected to PLC at Plant floor level. When I try to communicate to PLC at my PC I can only read data and can not write to any registers? I have tried using Proworx Nxt at the PC and I can see the ladder logic rungs update but if I try to force a coil on or write
a value to a register I get an error message that says I have to be logged on to the processor? Using my SCADA software package LOOKOUT I can only read my values from the graphic screns if I try to use a switch I created it ignores the command and never writes to the PLC. My converter is a B&B 485TBLED converter that converts the RS-232 signal to a 485. I have a NULL modem adapter connected to the PLC side and I
have the other converter at the PC side with no Null modem adapter.
Please help
a value to a register I get an error message that says I have to be logged on to the processor? Using my SCADA software package LOOKOUT I can only read my values from the graphic screns if I try to use a switch I created it ignores the command and never writes to the PLC. My converter is a B&B 485TBLED converter that converts the RS-232 signal to a 485. I have a NULL modem adapter connected to the PLC side and I
have the other converter at the PC side with no Null modem adapter.
Please help