Eaton RTK 725B range - Page 91

INM 725B Rev 21
85
Multiple Write Request
ASCII
START ADDRESS FUNCTION REGISTER
ADDRESS
QUANTITY BYTE
COUNT
DATA ERROR
CHECK
STOP
: XX XX XXXX XXXX XX XXXX XX [CR] [LF]
RTU
START ADDRESS FUNCTION REGISTER
ADDRESS
QUANTITY BYTE
COUNT
DATA ERROR
CHECK
STOP
ELAPSED
TIME 3 ½
CHARACTERS
MIN
Y Y YY YY Y YY YY
ELAPSED
TIME 3 ½
CHARACTERS
MIN
Multiple Write Response
ASCII
START ADDRESS FUNCTION REGISTER
ADDRESS
QUANTITY ERROR
CHECK
STOP
: XX XX XXXX XXXX XX [CR] [LF]
RTU
START ADDRESS FUNCTION REGISTER
ADDRESS
QUANTITY ERROR
CHECK
STOP
ELAPSED TIME
3 ½
CHARACTERS
MIN
Y Y YY YY YY
ELAPSED TIME
3 ½
CHARACTERS
MIN
Address
This defines the Node address of the card in the system, range 0-255. On entry level comm’s
the first card in the system is address 1 and the following cards are consecutively numbered.
Function
Modbus Function No
Error Check
This defines the error checking format required, for RTU this should be set to CRC (Cyclic
Redundancy Check), while with ASCII this should be LRC (Longitudinal Redundancy Check).