ICP DAS USA ET-7000 Series - Page 140

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Appendix D: Modbus Application Notes
ET-7000 AIO User Manual, Apr. 2009, V1.04, EMH-011-104----------140
AI5 40271 -32768 ~ 32767 40333 -32768 ~ 32767
AI6 40272 -32768 ~ 32767 40334 -32768 ~ 32767
AI7 40273 -32768 ~ 32767 40335 -32768 ~ 32767
AI8 40274 -32768 ~ 32767 40336 -32768 ~ 32767
AI9 40275 -32768 ~ 32767 40337 -32768 ~ 32767
The analog input High/Low Alarm contains two alarm types, Momentary Alarm and Latch
Alarm. Address 00700 of Modbus register can be used to set the High Alarm type of channel
0 and the total number of channels depends on the type of module. Address 00732 of
Modbus register can be used to set the Low Alarm type of channel 0.
ET-7017 AI High/Low Alarm Type Table
AI High Alarm Type AI Low Alarm Type
Channel Number
Register
Description
Register
Description
AI0 00700
0: Momentary Alarm
1: Latch Alarm
00732
0: Momentary Alarm
1: Latch Alarm
AI1 00701
0: Momentary Alarm
1: Latch Alarm
00733
0: Momentary Alarm
1: Latch Alarm
AI2 00702
0: Momentary Alarm
1: Latch Alarm
00734
0: Momentary Alarm
1: Latch Alarm
AI3 00703
0: Momentary Alarm
1: Latch Alarm
00735
0: Momentary Alarm
1: Latch Alarm
AI4 00704
0: Momentary Alarm
1: Latch Alarm
00736
0: Momentary Alarm
1: Latch Alarm
AI5 00705
0: Momentary Alarm
1: Latch Alarm
00737
0: Momentary Alarm
1: Latch Alarm
AI6 00706
0: Momentary Alarm
1: Latch Alarm
00738
0: Momentary Alarm
1: Latch Alarm
AI7 00707
0: Momentary Alarm
1: Latch Alarm
00739
0: Momentary Alarm
1: Latch Alarm
AI8 00708
0: Momentary Alarm
1: Latch Alarm
00740
0: Momentary Alarm
1: Latch Alarm
AI9 00709
0: Momentary Alarm
1: Latch Alarm
00741
0: Momentary Alarm
1: Latch Alarm
The following are the descriptions for two alarm types.
z Momentary Alarm
The alarm status is cleared while the analog input is not exceeding the alarm value.