Modbus list block operation – Micromod MOD: 1800P - MOD 30ML Identity Module (Version 2) System, I/O and Communications Functions User Manual

Page 80

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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.

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