M-system R3-NM1, Инструкция по эксплуатации

Страница: 4 / 7

R3-NM1
P. 4 / 7 EM-8354 Rev.4
MODBUS FUNCTION CODES & SUPPORTED CODES
■
DATA & CONTROL FUNCTIONS
CODE NAME R3-NM1
01 Read Coil Status X Digital output from the slave (read/write)
02 Read Input Status X Status of digital inputs to the slave (read only)
03 Read Holding Registers X General purpose register within the slave (read/write)
04 Read Input Registers X Collected data from the field by the slave (read only)
05 Force Single Coil X Digital output from the slave (read/write)
06 Preset Single Registers X General purpose register within the slave (read/write)
07 Read Exception Status
08 Diagnostics X
09 Program 484
10 Poll 484
11 Fetch Comm. Event Counter X Fetch a status word and an event counter
12 Fetch Comm. Event Log X A status word, an event counter, a message count and a field of event bytes
13 Program Controller
14 Poll Controller
15 Force Multiple Coils X Digital output from the slave (read/write)
16 Preset Multiple Registers X General purpose register within the slave (read/write)
17 Report Slave ID
18 Program 884/M84
19 Reset Comm. Link
20 Read General Reference
21 Write General Reference
22 Mask Write 4X Register
23 Read/Write 4X Register
24 Read FIFO Queue
■
EXCEPTION CODES
CODE NAME R3-NM1
01 Illegal Function X Function code is not allowable for the slave
02 Illegal Data Address X Address is not available within the slave
03 Illegal Data Value X Data is not valid for the function
04 Slave Device Failure X
05 Acknowledge X
06 Slave Device Busy X
07 Negative Acknowledge X
08 Memory Parity Error
■
DIAGNOSTIC SUBFUNCTIONS
CODE NAME R3-NM1
00 Return Query Data X Loop back test
01 Restart Comm. Option X Reset the slave and clear all counters
02 Return Diagnostic Register X Contents of the diagnostic data (2 bytes)
03 Change ASCII Input Delimiter X Delimiter character of ASCII message
04 Force Listen Only Mode X Force the slave into Listen Only Mode