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4 Series 90 -70 I/O Link Interface Module User’s Manual – February 1993
GFK-0644A
Module Description
An I/O Link Interface Module occupies one module slot in a Series 90–70 PLC rack. It
can be installed in any rack, in any slot except rack 0 slot 1, which is reserved for the CPU
Module.
RESET
PUSHBUTTON
RS–422/485
CONNECTOR
RS–422/485
CONNECTOR
LINK CFG
LINK ACTIVE
MODULE OK
a45015
MODEL 70
BEM 721
MODULE OK
LINK ACTIVE
LINK CFG
ON OR BLIN K = OK
MODULE
IC697BEM721
LABEL
44A726758–125R01
MODULE FUNCTION
SERIES 90–70
SERIAL I/O LINK
INTERFACE
RS–422/485
SERIAL PORT
NOT
USED
RS–422/485
SERIAL PORT
NEXT
(JD1A)
PUSH TO RESET
I/O LINK
INTERFACE
: MASTER MODE
MODEL 70
BEM 721
MODULE OK
LINK ACTIVE
LINK CFG
ON OR BLIN K = OK
MODULE
IC697BEM721
LABEL
44A726758–126R01
MODULE FUNCTION
SERIES 90–70
SERIAL I/O LINK
INTERFACE
RS–422/485
SERIAL PORT
NEXT
(JD1A)
NOT
USED
RS–422/485
SERIAL PORT
PREVIOUS
(JD1A)
NEXT
(JD1A)
PUSH TO RESET
I/O LINK
INTERFACE
: MASTER MODE
: SLAVE MODE
LEDs
The I/O Link Interface Module has three LEDS that show its operating, configuration,
and communications status.
Module OK: indicates the module’s operating status.
Link Active: indicates the module’s communications status.
Link Cfg: indicates whether I/O Link configuration has occurred.