GE 450, IC752CTD400 manual Communications PLC/CPU Connection, Autoconfig/Default/I/O

Communications

PLC/CPU Connection

Symptom	Possible Causes	Solution
CIMPLICITY does not	The system is attempting to	1. With the PLC powered up and
communicate with a PLC that has	communicate with a 90-30 PLC	connected to the Display Station,
been autoconfigured	using the SNP driver and a	establish communication between
(AUTOCONFIG/DEFAULT/I/O	CIMPLICITY project.	the Display Station and PLC via
error).		the 90-30 SNP driver.
		2. Using a Hand-Held
		Programmer, toggle the Default
		I/O (Enable or Disable)
		configuration parameter for the
		CPU. Communications between
		the Display Station and the PLC
		will be stopped. (Communications
		are stopped when you toggle from
		Enable to Disable, or vice versa.)
		3. Power cycle the PLC.
Communications between the host	COM port not configured in	Verify that the COM port is
computer and the controller are	system.	configured in the system.
unsuccessful.
	Cabling between computer and	Verify that the cable between the
	controller.	computer and the controller is
		correctly wired.
	Baud rate and parity configured	Verify that the baud rate and
	incorrectly.	parity on the computer are
		consistent with those on the
		controller.
	Wrong address.	Verify that the slave address is
		correct.

30 CIMPLICITY® Display Station Touch Display: IC752CTD400/450 – March 1998 GFK-1425B