ICP DAS USA RMV-511, User Manual

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6.2 Modbus address table
(1) DO status (Function Code:1,5,15)
Address(Dec) Address(Hex) Description Attribute
00129 0x81
If function code = 1
Read DO0
R/W
If function code = 5,15
Set DO0, 1:High, 0:Low
00130 0x82
If function code = 1
Read DO1
R/W
If function code = 5,15
Set DO1, 1:High, 0:Low
(2) DI status (Function Code:2)
Address Data Address Description Attribute
00000 0x00 Read DI0 R
00001 0x01 Read DI1 R
00002 0x02 Read DI2 R
00003 0x03 Read DI3 R
00004 0x04 Read DI4 R
00005 0x05 Read DI5 R
(3) AI status(Function Code:4)
Address Data Address Description Attribute
30027 0x1B Read AI value (hex) R
30028 0x1C Read AI value (engineering) R
Note:
1. AI value(Hex) conversion formulas: AI = (AI Hex * 20) / FFF
2.
AI value(
engineering
)
conversion formulas: AI = AI(engineering)/1000
Example:
(1) If read AI value(Hex) is
"
FF
"
AI = (FF * 20) /FFF = (255*20)/4095 = 1.25 mA
(2) If read AI value(engineering) is "1250"
AI = 1250/1000 = 1.25mA