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Serial Port Terminals
AM Voltage analog output 0 to 10VDC, 2 mA max.
AMI Current analog output 4-20 mA, nominal load
impedance 250Ω
L Common for analog
inputs
Sum of OI, O, and H currents
(return)
OI Analog input, current 4 to 19.6 mA range, 20 mA
nominal
O Analog input, voltage 0 to 9.6 VDC range, 10VDC
nominal, 12VDC max., input
impedance 10 kΩ
H +10V analog reference 10VDC nominal, 10 mA max.
AL0 Relay common contact
Contacts AL0–AL1, max resistive
load = 250VAC 2A; 30VDC 8A;
max inductive 250VAC, 0.2A;
30VDC 0.6A
Contacts AL0–AL2, max resistive
load = 250VAC 1A; 30VDC 1A;
max inductive = 250VAC, 0.2A;
30VDC 0.2A
Both contact pairs, min. loads =
100VAC 10mA; 5VDC 100mA
AL1 Relay contact, normally
closed during RUN
AL2 Relay contact, normally
open during RUN
Terminal
Name
Description Ratings and Notes
RPSP SN
Termination resistor (–)
SN
Termination resistor (+)
Send/receive (–) Negative
Send/receive (+) Positive