Specifications

D1.4 Trouble-shooting

The communication between programmable controller and PCS is monitored

constantly by the two participants. The error indication on the programmable

controller is made by setting the A 2.1 fault output. On the occurrence of

communication faults, a corresponding fault text is shown in the display of the

PCS and the ERR LED flashes.

Here, the most frequent faults are listed which occur during the first commissioning

and permanent operation:

1. DIL switch no. 8 is set to ON. If this is the case, then the PCS enters a diagnosis

routine after powering up. This is required only for test purposes. Remedy: set

DIL switch 8 to OFF and restart the PCS (by cycling power or pressing the mo-

mentary reset push-button above the DIL switch).

2. The fault output A 2.1 is set in the programmable controller. This is the case if

no new order is written into the programmable controller receive buffer within 4

seconds.

Has the E 2.1 restart input been shortly set at the programmable controller?

Did you make the same definitions for the data block in programmable controller

and in PCS?

Have you used the correct cable?

Is the cable defective?

3. The communication is active but after a certain time the following message

appears on the display of the PCS:

COMMUNICATION ERROR

Has the E 2.1 restart input been shortly set at the programmable controller?

Did you make the same definitions for the data block in programmable controller

and in PCS?

Have you used the correct cable?

Is the cable defective?

Is the PCS/programmable controller connection routed in a too noisy environ-

ment?

Are the grounding relationships insufficient?

Has the programmable controller been switched to STOP?

D1.5 Offlinemenu

A helpful diagnosis for the PCS 090/095/900 is the output of the PCS status on the

display. This display can be accessed by the following combination: press the

Help key after a PCS start (e.g. after a reset). The ERR LED must light constantly.

This option is available no more after starting the communication (ERR LED is de-

activated or flashes). By pressing the Help plus arrow keys you can display the

PCS version, the data block version, and the driver version as well as the selected

driver variables.

First commissioning