Register for Inputs
Original instructions
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Overview
The Input Register is arranged as follows.
Word
Function
1
Status word (module status)
2
State of the eight discrete inputs
3
Analog input word channel 1
4
Analog input word channel 2
5
Analog input word channel 3
6
Analog input word channel 4
7
Analog input word channel 5
8
Analog input word channel 6
9 ... 12
Not used
Word 1
The status word (word 0) contains information about the health of the module and the status of the discrete outputs. Word 0 also contains network communication loss, over temperature of the discrete outputs and short circuit at the discrete outputs.
Bits 15 ... 9
Bit 8
Bits 7 ... 4
Bit 3 (Channel 7, 8)
Not used
0 = Bad module health
(module lost communication)
1 = Healthy module
Not used
0 = Fault 1 = No Fault
Bit 2 (Channel 5, 6)
Bit 1 (Channel 4, 3)
Bit 0 (Channel 1, 2)
0 = Fault 1 = No fault
0 = Fault 1 = No fault
0 = Fault 1 = No fault
Word 2
Discrete Input Register
This word contains a right justified binary eight bit data field.
Words 3 ... 8
Analog Input Register Words 3 ... 8 map to the analog input register. Each word in this range contains a left justified 15 bit data field. The range is from 0H to 7FFE hex, but the resolution is 14 bit (0 ... 32766 decimal or 0 ... 7FFE hex).
Words 9 ... 12
Words 9 ... 12 are not used.
3x Registers
The 3x registers traffic copped to this module are used for input data as follows.
I/O Map Register
Data Type
3x + 1
Data for discrete input
3x + 2
Data for analog input channel 1
3x + 3
Data for analog input channel 2
3x + 4
Data for analog input channel 3
3x + 5
Data for analog input channel 4
3x + 6
Data for analog input channel 5
3x + 7
Data for analog input channel 6
Range
Input Operating Range
Input Voltage
Data is Left Justified
Comment
Input Range
-10.000 ... +10.000
00382 ... 32382
Nominal input voltage range
Input Over Range
+10.000 ... +10.238
32384 ... 32764
Linear over range input voltage
Input Out of Range
≥10.238
32766 (7FFE Hex)
Input voltage exceeding threshold may damage the module.
Input Under Range
-10.238 ... -10.000
00002 ... 00382
Linear under voltage range
Input Out of Range
≤-10.238
00000
Input voltage exceeding threshold may damage the module.