17-4
OP27, OP37 Equipment Manual
Release 05/99
17.3
Connection Elements
Slot B
Slot A
Ó
Ï
Ñ
Ð
Ò
Î
Í
Ì
Ë
Ê
Figure 17-2 OP37: Arrangement of connections
No
.
Name
Description
Ê
Chassis ground
–
Ë
Power supply/Relay output
Power supply (+ 24 V DC) and contact assemblies for driving a
horn or a light, for example.
Ì
PS2 keyboard connection
For DOS mode only
Serial interfaces
Level
Usage
Í
IF1A
V.24/TTY (active/passive)
PLC
Ï
IF2
V.24/TTY (active/passive)
PC, PU, printer
Ñ
IF1B
RS422/RS485
PLC
Ò
IF3
TTY (passive)/RS422/RS485
Not used at present
Î
PS2 mouse connection
For DOS mode only
Ð
DIP switch
For setting serial interface IF1B (refer to Appendix B). Set and
check with the table in Section , 13.1.2Configuring the IF1B inter-
face.
Ó
Parallel interface
LPT1
For parallel printer
Relay output
Contact assembly for temperature monitoring and driving a light or
an auxiliary blower, for example. The relay is tripped when the
outside temperature reaches 45
°
C.
Battery compartment (covered)
–
Direct key module or CPI (optional)
For connecting a direct key module with 12/ 16 digital outputs or a
control panel interface with max. 16/32 digital inputs/outputs.
AT expansion slot connection
Connection of an AT expansion slot for accommodating two short
AT cards. (The AT expansion slot is not supported by the OP firm-
ware.)
PCMCIA Slot A and Slot B
For JEIDA/PCMCIA cards (Slot A is for DOS mode only, Slot B
for OP and DOS modes)
OP37 Unit Description
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