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J1 Wiring - Digital In / Analog In
Built-In I/O
The I/O is mapped into OCS Register space, in three sep-
arate areas: Digital/Analog I/O, High-Speed Counter I/O,
and High-speed Output I/O. Digital/Analog I/O location is
fixed starting at 1, but the high-speed counter and high-
speed output references may be mapped to any open
register location.
Digital and Analog I/O Function Registers
Digital Inputs
Reserved
ESCP Alarm
Digital Outputs
Reserved
Analog Inputs
Reserved
Analog Outputs
Reserved
J2 Wiring - Digital Out
Wiring Details
Solid/Stranded Wire: 1 2-24 awg (2.5-0.2mm2).
Strip Length: 0 .28" (7mm).
Torque, Terminal Hold-Down Screws: 4 .5 – 7 in-lbs
(0.50 – 0.78 N-m).
Analog Input Tranzorb Failure
A common cause of Analog Input Tranzorb Failure on Ana-
log Inputs Model 2, 3, 4 & 5: If a 4- 20mA circuit is initially
wired with loop power, but without a load, the analog input
could see 24VDC. This is higher than the rating of the tran-
zorb. This can be solved by NOT connecting loop power
prior to load connection, or by installing a low-cost PTC in
series between the load and analog input.
%I1-12
%I13-31
%I32
%Q1-12
%Q13-24
%AI1-2
%AI3-12
n/a
%AQ1-8
Page 6
Wiring: Model 3
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