ABB LGR-ICOS GLA531 Series - Page 60

Operating Manual
3KXG165002R4201_2021_04 ABB PROPRIETARY INFORMATION 60
GLA531 Series LGR-ICOS™ Gas Analyzer
Figure 50 ioLogic E1240 Modbus Unit
Table 15 Modbus Wiring for Input Signals
Analog Input Channels Modbus Output Port (RJ45)
Channel 5 Signal
AI0+
Channel 5 Return
AI0–
Channel 6 Signal
AI1+
Channel 6 Return
AI1–
Channel 1 Signal
AI2+
Channel 1 Return AI2–
Channel 2 Signal AI3+
Channel 2 Return AI3–
Channel 3 Signal
AI4+
Channel 3 Return
AI4–
Channel 4 Signal
AI5+
Channel 4 Return
AI5–
The Channel 5 and 6 screw-terminals on the analyzer interface plate provide a 4–20 mA output signal for error
reporting. These channels are the equivalents to AI0+/AI0– and AI1+/AI1– of the Modbus outputs (see Table 15.)