YASKAWA MP920 User Manual page 140

6 217IF Module
6.6.2 MELSEC Communications
Command
BR Reads bit devices in 1-point units
WR Reads bit devices in 16-point units
Reads word devices in 1-point units
BW Writes bit devices in 1-point units
WW Writes bit devices in 16-point units
Writes word devices in 1-point units
BT Randomly specifies, sets, and resets bit devices and device
numbers in 1-point units
WT Randomly specifies, sets, and resets bit devices and device
numbers in 16-point units
Randomly specifies, sets, and resets word devices and device
numbers in 1-point units
BM Sets the bit devices to be monitored in 1-point units
WM Sets the bit devices to be monitored in 16-point units
Sets the word devices to be monitored in 1-point units
MB Monitors devices for which monitor data registration has
been performed (in bit units)
MN Monitors devices for which monitor data registration has
been performed (in word units)
ER Reads extension file registers in 1-point units
EW Writes extension file registers in 1-point units
ET Randomly specifies block numbers and device numbers, and
writes to the extension file registers in 1-point units
EM
Registers the extension file registers to be monitored in 1-
point units
ME
Monitors extension file registers for which monitor data reg-
istration has been performed
CR
Reads the data in the buffer memory
CW
Writes the data in the buffer memory
TR Reads the contents of the buffer memory of the special func-
tion unit
TW Writes data to the buffer memory of the special function unit 64 words
MR Reads the main sequence program
SR Reads the sub-sequence program
MW Writes the main sequence program
SW Writes the sub-sequence program
MELSEC Commands
The following table shows the MELSEC ACPU commands that are supported by the 217IF
Module, and the corresponding MEMOBUS command codes.
Table 6.9 MELSEC ACPU Commands
Description Qty
256 points
32 words
(512 points)
64 points
160 points
10 words
(160 points)
64 points
20 points
10 words
(160 points)
10 points
40 points
20 words
(320 points)
20 points
−
−
64 points
64 points
10 points
20 points
−
64 words
64 words
64 words
64 steps
64 steps
64 steps
64 steps
6-24
217IF MEMOBUS
Command
*
Support
−
No
Yes
01H/02H
Yes
03H/04H
−
No
Yes
0FH
Yes
10H
No −
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No
−
No