Doc# E107706 9- 8
Electro Industries/GaugeTech
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9: External I/O Modules
9.5: Analog Transducer Signal Output Modules
9.5.1: Overview
The Analog Transducer Signal Output Modules (0±1mA or 4–20mA) are available in
either a 4- or 8-channel configuration. Maximum registers per request, read or write,
is 17 registers.
The Nexus® 1250/1252 meter supplies power for up to two connected Analog Output
modules. See Section 9.2 for power and communication details. Refer to Section 5.6.2
to determine if you must use an additional power source, such as EIG’s PSIO.
Table 1:
Analog Transducer Signal Output Module Specifications
Model Numbers 1mAON4: 4-channel analog output 0±1mA
1mAON8: 8-channel analog output 0±1mA
20mAON4: 4-channel analog output 4-20mA
20mAON8: 8-channel analog output 4-20mA
Accuracy 0.1% of Full Scale
Scaling Programmable
Communication RS485, Modbus RTU
Programmable Baud Rates: 4800, 9600, 19200,
38400, 57600
Power Requirement 12-20VDC @50-200mA; 1250/1252 supports up to
two modules
Operating Temperature
(-20 to +70)
o
C/(-4 to +158)
o
F
Maximum Load Impedance 0±1mA: 10k Ohms; 4-20mA: 500 Ohms
Factory Settings Modbus Address: 1mAON4: 128; 1mAON8: 128;
20mAON4: 132; 20mAON8: 132
Baud Rate: 57600
Transmit Delay Time: 0
Default Settings (Reset Button) Modbus Address: 247
Baud Rate: 57600
Transmit Delay Time: 20msec
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