Micromod MOD: 1800P - MOD 30ML Identity Module (Version 2) System, I/O and Communications Functions - Manual (Page 263)

Logic Functions - Book 1
APPENDIX B - MODBUS MASTER CONFIGURATION
B-19
B.3.7 Write One or More Registers
The configuration of a Modbus Master EX block used to write one or more attributes in
memory area 40001 to 49999 is defined as:
INPUT1 WRR,MM,PORTz Local ASCII CFG ONLY
Not writeable through message handler.
This value is the number of attribute values that should be written. The values
to be written are stored at this block’s INPUT11 through INPUTn. The
minimum value is 1. The maximum value is dependent on the number of
attributes that can fit in 127 registers.
INPUT2 NUMBER WRITE ATTRIBUTES Local Count CFG ONLY
Not writeable through message handler.
Indicates the number of write attributes in this expression block.
INPUT3 STATUS INFO Local Long State
Not writeable through message handler.
See Message STATUS INFO values and descriptions above.
INPUT4 MESSAGE QUALITY Local Discrete
Not writeable through message handler.
GOOD (0) if a valid response message was received.
BAD (1) if a valid response message was not received.
INPUT5 MESSAGE ACTIVE Local Discrete
Not writeable through message handler.
Specifies whether the message transaction has been completed. The value
will be set to 1 (TRUE) when the message is triggered and remains set until
the transaction is complete or until failure is determined.
INPUT6 RESERVED Local Long State
Not writeable through message handler.
IF REFRESH STATE = 0
Previous send input value. Used in detecting low->high trip transaction.
ELSE IF REFRESH STATE = 255
This value is not used.
ELSE IF REFRESH STATE = 1 through 254
This value will get set equal to the REFRESH STATE value and decrement
by 1 each time this block executes. When it gets to 0 the read message is
sent to the slave. This value will remain at 0 until a response message is
received or the message times out. It will then repeat the cycle again.