Details of command
27
9-7
Data READ/WRITE_A command (DATA_RWA: 50h)
Operation commands to the RS-485 communication compatible product, reading and writing parameters, and
monitoring can be executed via remote I/O or remote register.
z
Remote I/O
Remote I/O is one of the data used in communication between the master station and RS-485 communication
compatible product. The control like the ON-OFF switching of I/O signals can be executed using serial
communication.
When remote I/O of the
NETC01-M2
is assigned to the register of the master station, it is possible to control using
remote I/O via the
NETC01-M2
. The following functions can be executed using remote I/O.
•
Controls the ON-OFF status of the input signal to the RS-485 communication compatible product.
•
Checks the output signal from the RS-485 communication compatible product.
z
Remote register
Remote register is one of the data used in communication between the master station and RS-485 communication
compatible product. Reading and writing the numerical number can be executed using serial communication.
When remote register of the
NETC01-M2
is assigned to the register of the master station, it is possible to control
using remote register via the
NETC01-M2
. The following functions can be executed using remote register.
•
Reads the parameters from the RS-485 communication compatible product.
•
Writes the parameters to the RS-485 communication compatible product.
•
Monitors the status of the RS-485 communication compatible product.
Data format
Byte
Command
(Master to
NETC01-M2
)
Response
(
NETC01-M2
to master)
1
DATA_RWA (50h)
DATA_RWA (50h)
2
OPTION
ALARM
3
STATUS
4
5 to 16
OUTPUT
INPUT
17 to 31
OUTPUT
INPUT
Explanation of command
Device group
I/O command group
Function group
Data communication command group
Communication type
Asynchronous command
Completion of command
operation
Confirms by the response byte 1=DATA_RWA (=50h) and STATUS.
CMDRDY=1.
Note
•
This command can be used in the phase 2 and 3.
•
OUTPUT: Output data
•
INPUT: Input data
•
Refer to the "I/O data."
Connection status
The connection status with the RS-485 communication compatible product can be monitored by the response of the
DATA_RWA command. For the connection status shown in the next section “I/O data,” when the master station
properly communicates with the RS-485 communication compatible product, the bit corresponding to the address
number shown in the table next becomes “1.” If the connection setting is disabled or if the communication error has
occurred, the bit becomes “0.”
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Address
number 7
Address
number 6
Address
number 5
Address
number 4
Address
number 3
Address
number 2
Address
number 1
Address
number 0
Address
number 15
Address
number 14
Address
number 13
Address
number 12
Address
number 11
Address
number 10
Address
number 9
Address
number 8
Summary of Contents for NETC01-M2
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