Publication 1763-RM001C-EN-P - October 2009
Protocol Configuration 531
Modbus Slave to MicroLogix Memory Map - Detail
Modbus Addressing Modbus Address Reference Modbus Function Code (decimal)
0001 to 4096 Read/Write Modbus Coil Data space 1, 5, 15
10001 to 14096 Read Only Modbus Contact Data space 2
30001 to 30256 Read Modbus Input Register space 4
30501 Modbus Data Table Coil File Number 4
30502 Modbus Data Table Contact File Number 4
30503 Modbus Data Table Input Register File Number 4
30504 Modbus Data Table Holding Register File Number 4
30506 Pre-Send Delay 4
30507 Modbus Slave Address 4
30508 Inter-character Timeout 4
30509 RTS Send Delay 4
30510 RTS Off Delay 4
30511 Parity 4
30512 Presentation Layer Error Code 4
30512 Presentation Layer Error Code 4
30513 Presentation Layer Error Count 4
30514 Executed Function Code Error 4
30515 Last Transmitted Exception Code 4
30516 File Number of Error Request 4
30517 Element Number of Error Request 4
30518 Function Code 1 Message Counter - Read Single Output Coil 4
30519 Function Code 2 Message Counter - Read Discrete Input Image 4
30520 Function Code 3 Message Counter - Read Single Holding Register 4
30521 Function Code 4 Message Counter - Read Single Input Register 4
30522 Function Code 5 Message Counter - Set/Clear Single Output Coil 4
30523 Function Code 6 Message Counter - Read/Write Single Holding Register 4
30524 Function Code 8 Message Counter - Run Diagnostics 4
30525 Function Code 15 Message Counter - Set/Clear for Block of Output Coils 4
30526 Function Code 16 Message Counter - Read/Write for Block of Holding Registers 4
30527 Modem Status 4
30528 Total messages responded to by this slave 4
30529 Total messages to this Slave 4
30530 Total Messages Seen 4
30531 Link Layer Error Count 4
30532 Link Layer Error 4
31501 to 31566 Read Only System Status File 4
40001 to 40256 Read/Write Modbus Holding Register space (1st Holding Register file). 3, 6, 16
40257 to 40512 Read/Write Modbus Holding Register space (2nd Holding Register file). 3, 6, 16
40513 to 40768 Read/Write Modbus Holding Register space (3rd Holding Register file). 3, 6, 16
40769 to 41024 Read/Write Modbus Holding Register space (4th Holding Register file). 3, 6, 16
41025 to 41280 Read/Write Modbus Holding Register space (5th Holding Register file). 3, 6, 16
41501 to 41566 Read/Write System Status File 3, 6, 16
41793 to 42048 Read/Write Modbus Holding Register space (6th Holding Register file). 3, 6, 16
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