Mitsubishi Electric FR-A820-00046 Instruction Manual page 980

Ethernet communication (FR-A800-E)
Data specified in the command
● Device code
A one byte numerical value is sent.
● Device No. (first device No.) specification
The device No. is specified for reading/writing data.
When consecutive devices are specified, the first device No. is specified. The device No. is specified
in decimal or hexadecimal depending on the device type.
A three byte numerical value is sent from the lower byte to the upper byte. If the device No. is a
decimal value, convert it to a hexadecimal value.
Example Device No. of Internal relay M63 / Input X20
M63
H3F H00 H00
Internal relay M63 has a decimal device No.
Convert the decimal value to a hexadecimal value H00003F. The value is sent in the order 3F, 00,
and 00. The device No. of Input X20 is regarded as H000020 and sent in the order 20, 00, and 00.
● Specification of the number of devices
The number of devices is specified for reading/writing data.
A two byte numerical value is sent from the lower byte to the upper byte.
Example Number of devices: 5 / 20
5 devices
H05 H00
● Specification of the number of devices for bit access
The number of devices is specified for reading/writing data in bit units. The number is used in the
Write random command (refer to page 5-783).
Example Number of devices: 5 / 20
5 devices
H05
5 - 778
X20
H20 H00 H00
20 devices
H14 H00
20 devices
H14
Parameters