Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

Publication 1763-RM001C-EN-P - October 2009
Function Files 67
Modbus RTU Master Diagnostic Counters Block (Presentation Layer)
Word Bit Description
52 - Diagnostic Counters Category Identifier Code (always 6)
53 - Length (always 32)
54 - Format Code (always 0)
55 - ERR 1: Illegal Function
56 - Last Device Reporting ERR 1
57 - ERR 2: Illegal Data Address
58 - Last Device Reporting ERR 2
59 - ERR 3: Illegal Data Value
60 - Last Device Reporting ERR 3
61 - ERR 4: Slave Device Failure
62 - ERR 5: Acknowledge
63 - ERR 6: Slave Device Busy
64 - ERR 7: Negative Acknowledgement
65 - ERR 8: Memory Parity Error
66 - Non-Standard Response
67 - Last Device Reporting ERR 4 to ERR 8 or Non-Standard Response
68 and 69 - Reserved (always 0)
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Allen-Bradley MicroLogix 1100 Specifications

General

Processor	32-bit
Programming Software	RSLogix 500
Mounting	DIN rail or panel mount
Power Supply	24V DC
Type	Compact PLC
Digital Inputs	12
Digital Outputs	8
Analog Inputs	4 (depending on model)
Analog Outputs	Optional with expansion module
Programming Language	Ladder Logic
Operating Temperature	0 to 55 °C (32 to 131 °F)
Series	MicroLogix