Evolution Controls EVO/ECM-Modbus - Register 22 - Motor 4 Low RPM Limit; Register 23 - Motor 1 High RPM Limit; Register 24 - Motor 2 High RPM Limit; Register 25 - Motor 3 High RPM Limit

©Evolution
Controls Inc.
10-Sept-2020
EVO/™ECM-Modbus RTU Series 2 Page 20
Application Guide
©2020 All Rights Reserved
Evolution Controls Inc.
San Diego, CA USA
Write Single Register Command (06)
Register Number
Data
Address
Function
HI
LO
HI
LO
Error Check
0-247
06
00
1-5, 10-16,
19-26
0-255
0-255
CRC-16
255
06
00
17-18
00
0-255
CRC-16
• All RTUs respond to an address "0" query. All EVO/ECM-Modbus RTUs process the write, but
none reply.
• The command code is 06.
• The register number is two bytes long. The high byte is 00, the low byte is an integer within the
range of valid register.
Registers 1-5 are dynamic data registers.
Registers 10-14 are default data registers.
Registers 15 and 16 are unprotected configuration registers.
Registers 17 and 18 are protected configuration registers. These registers can only be
written to at address 255.
Registers 19-26 are RPM alarm limit registers.
• The data field is two byte long.
Reply to Modbus Master
Register Number
Data
Address
Function
HI
LO
HI
LO
Error Check
0-247
06
00
1-5, 10-16,
19-26
0-255
0-255
CRC-16
255
06
00
17-18
00
0-255
CRC-16
• The response to a write single register query is identical to the query.