Modbus list block operation – Micromod MOD: 1800P - MOD 30ML Identity Module (Version 2) System, I/O and Communications Functions User Manual
Page 80
Logic Functions - Book 1
MODBUS LIST BLOCK
3-54
Millisecond Time
Modbus Register Value
Remarks
0
0
100
10
10000
1000
100000
10000
600000
60000
10 minutes worth
655350
65535
out of range indication
>655350
65535
out of range indication
The display that is used to configure the Modbus list block is shown in Figure 3-17.
Up to 99
attributes can be defined through the configurator for one Modbus list block.
Figure 3-17. Modbus List Block (ML), Edit Display, page 2
3.7.1
Modbus List Block Operation
Execution of a Modbus List block is distributed over all group scan periods and is therefore not
loop block related. The data identified by the Modbus List is collected, as the various groups
in an input buffer generate it. Therefore, when the Modbus Slave Communication block
processes a Modbus Read message, it gets a consistent set of data from this list’s input
buffer. Data is always collected, regardless of quality.