I/O Data Format and Size
 
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Overview
The I/O data contains discrete I/O points for these modules, as well as analog values and parameters for the complex (analog) I/O bases.
Each I/O unit is identified immediately after voltage is applied. Data exchange can then begin.
I/O modules with discrete, analog or mixed I/O bases are each sent messages using different data formats:
Type of I/O Base
Data Format
Discrete
Byte
Analog
Word
Discrete and analog combination / special modules
Word
Number of Words for analog I/O Bases
Number of I/O words for analog I/O bases:
Description
Function
Input Words
Output Words
170 AAI 030 00
8 input channels
8
2
170 AAI 140 00
16 input channels
16
4 (for parameters)
170 AAI 520 40
4 input channels, RTD, thermoelements
4
4 (for parameters)
170 AAO 120 00
4 output channels
0
5 (of which 1 word for parameters)
170 AAO 921 00
4 output channels
0
5 (of which 1 word for parameters)
170 AMM 090 00
4 inputs, 2 outputs (discrete)
1 (8 bits for diagnostics)
1
4 input channels, 2 output channels (analog)
4
4 (of which 2 words for parameters)
170 ANR 120 90
8 inputs, 8 outputs (discrete)
6 input channels, 4 output channels (analog)
12
12
Number of Words for Special Modules
Number of I/O words for special modules:
Description
Function
Input Words
Output Words
170 ADM 540 80
6 inputs, 3 outputs (120 VAC)
1 Modbus interface
16
16
170 AEC 920 00
Counter
8
8
Number of Bytes for discrete I/O Bases, 24 VDC
Number of Bytes for discrete I/O Bases, 24 VDC)
Description
Function
Input Byte
Output Byte
170 ADI 340 00
16 inputs
2
0
170 ADI 350 00
32 inputs
4
0
170 ADO 340 00
16 outputs
0
2
170 ADO 350 00
32 outputs
0
4
170 ADM 350 10
16 inputs, 16 outputs
2
2
170 ADM 350 11
16 inputs, 16 outputs
2
2
170 ADM 370 10
16 inputs, 8 outputs
2
2
170 ADM 390 10
16 inputs, 12 outputs
6 (2 discrete and 4 diagnostics)
2
170 ADM 390 30
10 inputs, 8 outputs
2
2
Number of Bytes for discrete I/O Bases, 120/230 VAC
Number of bytes for discrete I/O Bases, 120/230 VAC)
Description
Function
Input Byte
Output Byte
170 ADI 540 50
16 inputs / 240 VAC
2
0
170 ADI 740 50
16 inputs / 120 VAC
2
0
170 ADO 530 50
8 outputs / 120 VAC
0
2
170 ADO 540 50
16 outputs / 120 VAC
0
2
170 ADO 730 50
8 outputs / 230 VAC
0
2
170 ADO 740 50
16 outputs / 230 VAC
0
2
170 ADM 690 50
10 inputs, 8 outputs
120 VAC
2
2
170 ADM 690 51
10 inputs, 8 outputs
120 VAC
2
2
170 ARM 370 30
10 inputs (24 V), 8 relay outputs
120 VAC
2
2