App index – Yokogawa Standalone MW100 User Manual

Page 240

5-27

IM MW100-01E

Specification

App

Index

Modbus Client Function (/M1 option)

Communication possible with Modbus/TCP protocol
Communication media:

Ethernet 10BASE-T/100BASE-TX

Communication interval: You can select the following:

100, 200, 250, or 500 ms, or 1, 2, 5, or 10 s

Depending on the performance of the main unit, data
reading and writing may not be able to be performed at
the set communication interval resulting in data loss. If this
occurs, the communication input channel holds the previous
value. In this case, you must lengthen the communication
interval, or reduce the load on the main unit.

Connection wait time:

The connection can be dropped if there is no response from
the server after sending commands.

You can select the connection wait time from the following.

Forever (do not drop connection), 0 to 10 s

Communication recovery wait:

The time after which commands are sent following

disconnection after the connection wait time. Selected from
the following: Soon (communication interval), 1-60 s

Connection destination (server): Up to 10 can be set.
Supported function:

Same as Modbus master function

Command settings:

Up to 100 commands can be set.

Command items:

Loading channels: C001 to C300

Writing channels: 001 to 060, A001 to A300, C001 to C300

Server (specified by registered number): 1 to 10

Input registers: Same as Modbus master function

Hold registers: Same as Modbus master function

Type:

Same as Modbus master function

If the type is Int 16 or Uint 16, the maximum number of
channels that can be specified for read/write channels is
127. For other types, the maximum is 63.

Modbus Delay Response: You can specify a wait time of 0, 10 ms, 20 ms, or 50 ms

before the Modbus server responds to commands, so that
the MW100 processing capacity will not diminish even when
connected in continuous communication mode.

Modbus Server Function

Communication possible with Modbus/TCP protocol
Communication media:

Ethernet 10BASE-T/100BASE-TX

Port:

502/tcp

Maximum no. of simultaneous connections: 4
Receive timeout:

Drops communication connection if packets not received for
30 s (fixed) or more

Supported function:

Same as Modbus slave function. However, there is no
function code 8 (loopback test).

Same as Modbus slave function

Modbus error response:

Same as Modbus slave function

5.2 Main Module (MW100-E) Specifications