Leadshine Technology EM2RS Series - Preset Multiple Registers FC

EM2RS Modbus RS485 Stepper Drive User Manual
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Master->slave data
Message:
01
06
18 01
22 11
06 06
Description
Address
Function code
Register address
Write data
CRC check code
Slave>master data:
Message:
01
06
18 01
22 11
06 06
Description
Address
Function code
Register address
Write data
CRC check code
Note: 0x1801-- Auxiliary control word, and 0x2211 is to save the value to EEPROM. This step is required after the parameter
has been modified, to prevent losing the written value after power-off.
4.2.3 Preset Multiple Registers FC= 10
Preset Multiple Registers Query (Master to Slave)
Preset Multiple Registers Response (Slave to
Master)
Slave ID
00 - 1F
Slaver ID
00 - 1F
FC
10
FC
10
Address of first register to
write to
High
Address of first register
written to
High
Low
Low
Total number of registers to
write to
High
Total number of registers
written to
High
Low
Low
Number of data bytes in
message
2 bytes per register
CRC
Low
Value1 to write
High
High
Low
-
Value2 to write
High
Low
CRC
Low
High
Example E: Write multiple registers-- configure input port functions
Send message:01 10 01 46 00 04 08 00 00 00 28 00 00 00 29 1C 14
Receive message:01 10 01 46 00 04 21 E3
Details as following:
Master->slave data:
Message
01
10
01 46
00 04
08
00 00, 00 28, 00 00, 00 29
1C 14
Description
Slave
ID
FC
First address
write
Number of
address write
Number
of bytes
Value to write
CRC
Slave>master data:
Message
01
10
01 46
00 04
21 E3
Description
Slave ID
FC
First address write
Number of address write
CRC
Note: (1) In above example, modify the function of DI2 / DI3, and write the value as DI2=0x28 ( means path 0), DI2=0x29