TAMAGAWA TS2151N121E9 TS2151N121E9 TS2151N121E9 TS2151N121E9 TS2151N121E9

TS2151N121E9

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TS3630N2E3

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TS5214N566

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TS5233

Write 16-bit word data to Modbus server addresses (40001 to 49999)
● Word or bit sized data is transferred to/from the DB or M memory buffer assigned by
MB_DATA_PTR.
● If a DB is assigned as the buffer by MB_DATA_PTR, then you must assign data types to
all DB data elements.
– The 1-bit Bool data type represents one Modbus bit address
– 16-bit single word data types like WORD, UInt, and Int represent one Modbus word
address
– 32-bit double word data types like DWORD, DInt, and Real represent two Modbus
word addresses ● Complex DB elements can be assigned by MB_DATA_PTR, such as
– Standard arrays
– Named structures where each element is unique.
– Named complex structures where each element has a unique name and a 16 or 32 bit
data type.
● There is no requirement that the MB_DATA_PTR data areas be in the same global data
block (or M memory area). You can assign one data block for Modbus reads, another
data block for Modbus writes, or one data block for each MB_CLIENT station.A Modbus TCP client can support concurrent connections up to the maximum number of
Open User Communications connections allowed by the PLC. The total number of
connections for a PLC, including Modbus TCP Clients and Servers, must not exceed the
maximum number of supported Open User Communications connections (Page 424). The
Modbus TCP connections may be shared between Client and/or Server type connections.
Individual client connections must follow these rules:
● Each MB_CLIENT connection must use a distinct instance DB
● Each MB_CLIENT connection must specify a unique server IP address
● Each MB_CLIENT connection must specify a unique connection ID
● Unique IP port numbers may or may not be required depending upon the server
configuration
The Connection ID must be unique for each individual connection. This means a single,
unique Connection ID must only be used with each individual instance DB. In summary, the
instance DB and the Connection ID are paired together and must be unique for every
connection.
Amount of time (in seconds) to wait upon a blocked Modbus client
instance before removing this instance as being ACTIVE. This can
occur, for example, when a client request has been issued and then
application stops executing the client function before it has completely
finished the request. The maximum limit is 55 seconds.
MB_Unit_ID Word 255 Modbus unit identifier:
A Modbus TCP server is addressed using its IP address. As a result,
the MB_UNIT_ID paraer is not used for Modbus TCP addressing.
The MB_UNIT_ID paraer corresponds to the slave address in the
Modbus RTU protocol. If a Modbus TCP server is used for a gateway to
a Modbus RTU protocol, the MB_UNIT_ID can be used to identify the
slave device connected on the serial network. The MB_UNIT_ID would
be used to forward the request to the correct Modbus RTU slave
address.
Please note that some Modbus TCP devices may require the
MB_UNIT_ID paraer to be initialized within a restricted range of
valuesTime in seconds that the MB_CLIENT waits for a server to respond to a
request.
Connected Bool 0 Indicates whether the connection to the assigned server is connected
or disconnected: 1=connected, 0=disconnected Function code not supported
8382 03 Data length error
8383 02 Data address error or access outside the bounds of the MB_HOLD_REG address area
8384 03 Data value error
8385 03 Data diagnostic code value not supported (function code 08)MB_CLIENT is waiting for a Modbus server response to a connect or disconnect request, on the assigned
TCP port. This is only reported for the first execution of a connect or disconnect operation.
7002 MB_CLIENT is waiting for a Modbus server response to a connect or disconnect request, for the assigned
TCP port. This will be reported for any subsequent executions, while waiting for completion of a connect
or disconnect operation.