Yokogawa Removable Chassis DX1000N - Manual (Page 233)

6-7
IM 04L41B01-17E
Specifications
1
2
3
4
5
6
App
Index
Modbus Server Function
Modbus Server Specifications
Communicate via ModbusTCP
Communication media: Ethernet 10Base-T
Port:
502/tcp (default value)
Command wait timeout: 1 minute. However, the timeout to receive the command after
starting to receive the command is 10 seconds.
Maximum number of connections:
2
Supported functions: The functions that the DX supports are listed below.
Function
Code
Function Operation
3 Read the hold register (4XXXXX) The client device reads the communication input data.
4 Read the input register
(3XXXXX)
The client device reads the computed, measured,
alarm, and time data of the DX.
6 Single write to hold register
(4XXXXX)
The client device writes to the communication input
data or external input channel of the DX.
8 Loopback test The client device performs a loopback test of the DX.
16 Write to the hold register
(4XXXXX)
The master device writes to the communication input
data or external input channel of the DX.
Register assignments (shared with the Modbus slave function)
Measurement ch.
Computation ch.
External input ch.
Measurement ch.
Computation ch.
External input ch.
Time
Measured data
Alarm status
Computed data
Alarm status
Measured data
Alarm status
Alarm list
Alarm list
Alarm list
Data type
16-bit signed integer
Bit string
32-bit signed integer
Bit string
16-bit signed integer
Bit string
Bit string
Bit string
Bit string
16-bit signed integer
Number
300001 to 300048
301001 to 301048
302001 to 302120
303001 to 303060
304001 to 304240
305001 to 305240
306001 to 306012
306021 to 306035
306041 to 306100
309001 to 309008
Data
Input register
Communication input data
Measured data on external input ch.
Data type
16-bit signed integer
32-bit floating point
16-bit signed integer
Number
400001 to 400060
400301 to 400420
401001 to 401240
Data
Hold register
Client
Read
Client
Read Write
On Models with the PROFIBUS-DP Interface (/CP1 option)
On models with the PROFIBUS-DP interface (/CP1 option), the communication input
data for C01 to C24 (on the DX1000) or for C01 to C32 (on the DX2000) is reserved for
PROFIBUS-DP. The client device cannot write values to this communication input data.
6.3 Modbus Protocol Specifications