Format Of Request Data Part And Response Data Part - Panasonic FP7 User Manual

9.3.3 Format of Request Data Part and Response Data Part

• The device information given to the rear part of each command and response is as follows.
• The data sequence and the number of data vary depending on the unit of read and write and
the device type.
• These data are sent from the low bytes.
 Components of request data and response data parts
No. Name
①
Starting device
②
Device code
③
No. of devices
④
Data
 Reading and writing word devices
For reading or writing three words starting with the device no. 100 of the data register of MC
protocol, i.e. D00100 to D00102 (FP7 device nos.: DT100 to DT102);
① ②
64 00 00 A8
h h h h
L H
No. Name
①
Starting device
②
Device code
③
No. of devices
Send/Receive
④
data on MC
protocol
Description
The starting number of a target device for read and write is specified as 6-digit
hex 3-byte data.
The device code to indicate a device type is specified.
The number of devices which perform read and write is specified.
The number of words is specified for word devices and the number of bits is
specified for bit devices.
For reading and writing bit devices such as internal relays in word units, specify
the number of words.
The data sequence varies depeding on the device type and transfer unit for
performing read and write.
③ ④
03 00 64 00 C8
h h h h h
L H L
L H
Description
Specify H000064=100 for the starting device number as 3-byte data.
Specify the device code A8.
Specify the number of words, 3.
Read or write 3-word data.
00 ２C 01
h h h
H
L H
9.3 Communication Format
9-7