HE693RTM705

A. The number of masters is limited by the I/O limitation on the CPU that you use.

Q. How many slaves can I have on one master?

A. Each of the two ports can have up to 32 slaves.

Q. Do I initialize the Com Req. every time I want to poll the slave?

A. No, once communication has been established the master continues to poll the slave for information that was requested by the MCB.

Q. Can I shutoff a MCB and turn it on only once a month?

A. Yes, to accomplish this the interactive bit must be set on the port parameter word in the COM_REQ data format. A zero then must be written into the address+1 of the MCB that you want to shutoff. When you want to activate the MCB, a valid RTU command then must be written into the address+1 of the MCB.

Q. Can radio modules be used with the RTM705?

A. Yes, they can.

Q. Can any CPU be used?

A. No, it must be a 331 or higher.

Q. How many MCB’s can be in one Com req.?

A. 1024

Q. What is the Pointer Offset?

A. GE Fanuc starts all their addressing at one and Modbus starts their addressing at zero.