Rockwell Automation 1771-IFE , D17716.5.90 USER MNL. ANALOG INPUT Module - Manual (Page 32)

Module Configuration
Chapter 4
4-3
You can select single-ended or differential inputs using the designated bit
in the configuration file. Inputs to a particular module must be all
single-ended or all differential. Set BTW word 3, bit 08 (bit 10 octal) as
shown in Table 4.C.
Table 4.C
Selecting SingleĆended or Differential Inputs
Decimal Bit 8
(Octal Bit 10)
Input type
1 differential inputs
0 singleĆended inputs
You must also indicate what format will be used to read data from your
module. Typically, you select BCD with PLC-2 processors, and 2’s
complement binary with PLC-3 and PLC-5 processors. See Appendix C
for details on data format. You use BTW word 3 bits 09-10 (11-12 octal) to
set the data format (Table 4.D).
Table 4.D
Selecting the Data Format
Decimal Bit 10
(Octal Bit 12)
Decimal Bit 09
(Octal Bit 11)
Data Format
0 0 BCD
0 1 not used
1 0 two's complement binary
1 1 signed magnitude binary
Input Type
Data Format