Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual page 69

■Device code
This data is for identifying the head device memory for each block for which batch read is performed.
The device code for each device is shown in Page 44 Device range.
The double word device and the long index register (LZ) are not supported.
• When communicating data in ASCII code
Each device code is converted to 2-digit ASCII code (hexadecimal) and sent.
Ex.
Internal relay (M) and link register (W):
The internal relay (M) is converted to "M*" and link register (W) is converted to "W*", and sent from "M" and "W" respectively.
• When communicating data in binary code
1-byte numeric value indicating each device code is sent.
Ex.
Internal relay (M) and link register (W):
90H is transmitted for the internal relay (M) and B4H is sent for the link register (W).
■Number of devices
This data is for specifying the number of points in the continuous device range of each block for which batch read is performed
(1 point = 16 bits for bit device memory and 1 point = 1 word for word device memory), where one block consists of continuous
word or bit devices.
• When communicating data in ASCII code
The number of points for each block is converted to a 4-digit ASCII code (hexadecimal) and sent.
Ex.
For 5 points: Converted to "0005", and sent sequentially from "0".
For 20 points: Converted to "0014", and sent sequentially from "0".
• When communicating data in binary code
2-byte numeric value indicating the number of points for each block is sent.
Ex.
For 5 points: Converted to 0005H, and sent sequentially from 05H.
For 20 points: Converted to 0014H, and sent sequentially from 14H.
• Specify number of devices so that the appropriate condition is satisfied
960  total number of points for all word device blocks + total number of points for all bit device blocks
The extension specification is allowed for the device memory being read using the device read block
functions.
4
4 COMMANDS
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4.2 Device Access