Ir/Cio Bit Allocations - Omron SYSMAC C Series Operation Manual

IR/CIO Bit Allocations

Current Input
Precaution
2-2

IR/CIO Bit Allocations

Connect as shown below when the same power supply is used for input points 1
and 2.
Connect resistors from the shield to the negative terminal. This connection re-
sults in an accuracy of ±1%.
Input device
+
+V
0 V
–
+
+V
0 V
–
Abide by the following precaution when the same power supply is used for the
input points.
Connect the wiring as shown in the diagram above when the same power supply
is used for input points 1 and 2.
Note Unlike when separate power supplies are used, the shield terminal must not be
shorted to the negative terminal.
The IR/CIO bit allocations are shown below. Each Unit is allocated two words.
Bit
0 A/D converted data 2
1 A/D converted data 2
2 A/D converted data 2
3 A/D converted data 2
4 A/D converted data 2
5 A/D converted data 2
6 A/D converted data 2
7 A/D converted data 2
8 A/D converted data 2
9 A/D converted data 2
10 A/D converted data 2
11 (See note 1) A/D converted data 2
12 0
13 0
14 0
15 (See note 2) Disconnection detect bit
Note 1. The function of bit 11 differs for a unipolar and bipolar input, as follows:
Unipolar Input: A/D Converted Data:
Bipolar Input:
R: 25 kΩ
0
1
R
2
3
4
5
6
R
7
8
9
Shielded
twisted-pair
cable
Input words
IR/CIO n: Point 1
0
1
2
3
4
5
6
7
8
9
10
11
Sign Bit: OFF for positive values
ON for negative values
Section 2-2
+Voltage input
+Current input
Input point 1
– Input
Shield
+Voltage input
+Current input
Input point 2
– Input
Shield
IR/CIO n+1: Point 2
0
A/D converted data 2
1
A/D converted data 2
2
A/D converted data 2
3
A/D converted data 2
4
A/D converted data 2
5
A/D converted data 2
6
A/D converted data 2
7
A/D converted data 2
8
A/D converted data 2
9
A/D converted data 2
10
A/D converted data 2
11
A/D converted data 2
0
0
0
Disconnection detect bit
11
2
13