MRX Slave Memory Address
MRX Master Memory Addresses
MRX Number of Elements
MRX Exception Response Buffer
DL205 User Manual, 4th Edition, Rev. B
4–49
Chapter 4: System Design and Configuration
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MRX Slave Address Ranges
Function Code Modbus Data Format Slave Address Range(s)
01 – Read Coil 484 Mode 1–999
01 – Read Coil 584/984 Mode 1–65535
02 – Read Input Status 484 Mode 1001–1999
02 – Read Input Status 584/984 Mode
10001–19999 (5 digit) or
100001–165535 (6 digit)
03 – Read Holding Register 484 Mode 4001–4999
03 – Read Holding Register 584/984
40001–49999 (5 digit) or
4000001–465535 (6 digit)
04 – Read Input Register 484 Mode 3001–3999
04 – Read Input Register 584/984 Mode
30001–39999 (5 digit) or
3000001–365535 (6 digit)
07 – Read Exception Status 484 and 584/984 Mode n/a
MRX Master Memory Address Ranges
Operand Data Type DL260 Range
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 0–1777
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Y 0–1777
Control Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . C 0–3777
Stage Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S 0–1777
Timer Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T 0–377
Counter Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CT 0–377
Special Relays. . . . . . . . . . . . . . . . . . . . . . . . . . . . SP 0–777
V–memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V All
Global Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . GX 0–3777
Global Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . GY 0–3777
Number of Elements
Operand Data Type DL260 Range
V–memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V All (see page 3-56)
Constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . K Bits:1–2000 Registers: 1-125
Exception Response Buffer
Operand Data Type DL260 Range
V–memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V All (see page 3-56)