Communication Interfaces
VTK-TR-BA-072e-1 - User Manual MDS 358X Series
8.2 PLC Interface: 15-pin, Sub-D
Fig. 62: PLC Interface: 15-pin, Sub-D
The PLC interface (illustrated above) works on digital basis without a particular syntax. It allows
for controlling a machine or device by means of a remote master device. Transmission of data is
possible in either direction. The trigger delay of this interface amounts to 120 μs.
Access is possible to:
• Status bits
• Values of voltage and current
• Set-Trigger signals initiating dispensing cycles (pulses) or complete packages of pulses
(bursts)
You can find a connection diagram in the attachments (see Page 168).
INFORMATION
Do not use keypad during PLC triggered dispensing
When a PLC-trigger is send, the keypad is locked at the same time. This lock can be lifted by
pressing the [enter]-key. But make sure not to do it during dispensing, since it also activates a
delay, which could affect your dispensing result. On the other hand, a trigger does not work, if
the MDC is not switched to the main menu. Additionally do not send a trigger, while the heater is
starting.
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