I/O Modules Pld-H And Pla-H - HEIDENHAIN iTNC 530 HSCI Technical Manual

3.7.16 I/O modules PLD-H and PLA-H

PLD-H 16-08-00
Pin layout
PLD-H 08-16-00
Pin layout
July 2013
Connector Function
X11 PLC inputs, channel A
X12 PLC inputs, channel A
X21 PLC outputs, channel A
Diagnosis (meanings of the LEDs):
Red (X11/pin 1) status LED

• Flashes: status of I/O module OK
• Continuously on or off: error on I/O module
Yellow (per output): Status of the output

Error recognition:
Short circuit: A short circuit is reported when a current >= 20 A flows

for approximately 3 ms. Both the output-specific message and the group
message are modal.
After the short circuit has been removed, the PLC must reset the output
before it can be activated again.
Connector Function
X11 PLC inputs, channel A
X21 PLC outputs, channel A
X22 PLC outputs, channel A
Diagnosis (meanings of the LEDs):
Red (X11/pin 1) status LED

• Flashes: status of I/O module OK
• Continuously on or off: error on I/O module
Yellow (per output): Status of the output

Error recognition:
Short circuit: A short circuit is reported when a current >= 20 A flows

for approximately 3 ms. Both the output-specific message and the group
message are modal.
After the short circuit has been removed, the PLC must reset the output
before it can be activated again.
3.7 iTNC 530 HSCI connection overview
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