Allen-Bradley MicroLogix 1400 User Manual

Publication 1766-RM001A-EN-P - October 2008
26 I/O Configuration
1762-IT4 Thermocouple Module Input Data File
For each module, slot x, words 0…3 contain the analog values of the
inputs. The input data file is shown below.
The bits are defined as follows:
• Sx = General status bits for channels 0…3 (S0…S3) and the CJC
sensor (S4). This bit is set (1) when an error (over-range,
under-range, open-circuit, or input data not valid) exists for that
channel. An input data not valid condition is determined by the user
program. Refer to MicroLogix 1200 I/O Thermocouple/mV Input
Module User Manual, publication 1762-UM002
for additional details.
• OCx = Open-circuit indication for channels 0…3 (OC0…OC3) and
the CJC sensor (OC4).
• Ox = Over-range flag bits for channels 0…3 (O0…O3) and the CJC
sensor (O4). These bits can be used in the control program for error
detection.
• Ux = Under-range flag bits for channels 0…3 (U0…U3) and the CJC
sensor (U4). These bits can be used in the control program for error
detection.
Table: 0.B
Wor
d/Bit
1514131211109876543210
0
SGN
Analog Input Data Channel 0
1
SGN
Analog Input Data Channel 1
2
SGN
Analog Input Data Channel 2
3
SGN
Analog Input Data Channel 3
4 Reserved OC
4
OC
3
OC
2
OC
1
OC
0
Reserved S4 S3 S2 S1 S0
5 U0O0U1O1U2O2U3O3U4O4Reserved
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Allen-Bradley MicroLogix 1400 Specifications

General

Processor	32-bit
Expansion Modules	Up to 7 expansion I/O modules
Power Supply	24V DC or 120/240V AC
Programming Software	RSLogix 500
Communication Ports	Ethernet, RS-232/RS-485 combo port
Controller Type	Programmable Logic Controller (PLC)
Series	MicroLogix
Digital Outputs	12
Analog Inputs	6 (embedded)
Analog Outputs	2 (embedded)
High-Speed Counter	6 high-speed counters
Pulse Output	2 (embedded)
Ethernet Port	Yes