Chapter 10. Drawings, Schematics, and Pin Assignments
EQ-77X LDLS® Operation Manual
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10.2 I/O Connector Pin Assignment
Description
Pin #
Details
Commands (Inputs)
OPERATE REQUEST, apply +5V (referenced to digital
common) to initiate start cycle.
LAMP OPERATE
12
EXTERNAL INTERLOCK, apply +5V (referenced to digital
common) to close interlock and allow operation.
EXTERNAL INTERLOCK
13
Status Indicators (Outputs)
LAMP ON
1
Pulled to digital common when ON
LASER ON
2
Pulled to digital common when ON
LAMP MODULE FAULT
3
Pulled to digital common when OK, float on FAULT
CONTROLLER FAULT
4
Pulled to digital common when OK, float on FAULT
IS5V SUPPLY
5
200mA maximum, referenced to digital common
DIGITAL COMMON
6, 7, 8, 9
Galvanically isolated from system
RESERVED
10, 11, 14, 15
Do not connect
10.3 RS-485 Interface Pin Assignment
Description
Pin #
Details
TRANSMIT A (–)
8
From EQ-77X, connect to host RECEIVE A
TRANSMIT B (+)
3
From EQ-77X, connect to host RECEIVE B
RECEIVE A (–)
7
To EQ-77X, connect to host TRANSMIT A
RECEIVE B (+)
2
To EQ-77X, connect to host TRANSMIT B
GROUND
5, 9
Galvanically isolated from system
RESERVED
1, 4, 6 Do not connect
I/O Connector Pin Assignments
Table 7.
RS-485 Interface Pin Assignments
Table 8.