DEV 1951 - Control Via the Digital Interface

User Manual DEV 1951
 Copyright DEV Systemtechnik GmbH 2004-2017 41
5.4 Control via the Digital Interface
The digital interface of the DEV 1951 provides basic remote switching functionality,
e.g. for the control via a PLC (Programmable Logic Control).
The connector for the digital interface (SubD-9 (f), labeled "DIG/In") is located at the
rear side of the chassis, please refer to chapter 7 for the pin assignment.
Note:
 Since the digital interface is defined as a remote interface, it only works if the
device is in Remote Mode.
 If the device is equipped with a single switch module, only the contacts for
Channel 1 are monitored for operation.
 If the device is equipped with two switch modules and if the switching mode is
set to Simultaneous switching mode (chapter 5.1.4), only the contacts for
Channel 1 are monitored for operation.
 The switching commands via the digital interface will override switching
commands issued via SNMP or via any CPH protocol (Sandar Prosan, Leitch, or
QEC), i.e. the digital interface has a higher priority.
The following figure shows how the switch module setting works when using the
digital interface:
1951
PIN 9
PIN 8
PIN 7
1951
1951 1951
Individual: Channel 1, Port "In A"
Simultaneous: both channels, Port "In A"
PIN 9
PIN 8
PIN 7
PIN 3
PIN 2
PIN 1
PIN 3
PIN 2
PIN 1
Individual: Channel 1, Port "In B"
Simultaneous: both channels, Port "In B"
Individual: Channel 2, Port "In A"
Simultaneous: (not functional)
Individual: Channel 2, Port "In B"
Simultaneous: (not functional)