Rockwell Automation 1746-NR4 SLC RTD/Resistance Input Module User Manual - Manual (Page 125)

125 Publication 1746-UM008B-EN-P - December 2006
Appendix
C
Configuration Worksheet
for RTD/Resistance Module
The following configuration procedure and worksheet are provided to
help you configure each of the channels on your RTD module. The
channel configuration word consists of bit fields, the settings of which
determine how the channel will operate. This procedure looks at each
bit field separately and helps you configure a channel for operation.
Refer to the Channel Configuration Word (O:e.0 through O:e.3) - Bit
Definitions table and the detailed configuration information in
Chapter 5 as needed to complete the procedures in this appendix. Or
you may prefer to use the summary worksheet on page 128.
Channel Configuration
Procedure Proceed as follows.
1. Determine the input device type (RTD type or resistance input)
for a channel and enter its respective 4-digit binary code in bit
field 0…3 of the channel configuration word.
Bits 0-3
RTD Sensors/Setting
Resistance
Input/Setting
Platinum
( ∝ = 0.00385)
Platinum
(
∝ = 0.003916)
Copper
(
∝ = 0.00426)
Nickel
(
∝ = 0.00618)
(
∝ = 0.00672)
Nickel Iron
(
∝ = 0.00518)
Select
Input Type 100
Ω
0000 100
Ω
0100
10
Ω (1) 1000 120
Ω 1001
604
Ω 1011
150
Ω
1100
200 Ω 0001 200 Ω 0101 - - 120
Ω (2)
1010 - - 500 Ω 1101
500
Ω
0010 500
Ω
0110 - - - - - - 1000
Ω
1110
1000 Ω 0011 1000 Ω 0111 - - - - - - 3000 Ω 1111
(1)
Actual value at 0 °C (32 °F) is 9.042 Ω per SAMA standard RC21-4-1966.
(2) Actual value at 0 °C (32 °F) is 100 Ω per DIN standard.