17
Precautions when Reusing Programs from Earlier Models Section 2-4
Words per Frame for C-mode RG Command
Note There are several exceptions to the number of words per frame values shown
in the table above:
The following responses are returned when reading 246 words of Timer/
Counter Completion Flags through CS/CJ-series CPU Unit built-in ports, CS/
CJ-series Serial Communications Units/Boards, C200HX/HG/HE CPU Unit
built-in ports, or C200HS CPU Unit built-in ports.
The second-to-last frame contains 124 data words and the last frame contains
1 word. This also applies when the number of words is 246 + a multiple of 125
(i.e., 371 words, 496 words, 621 words, etc.).
The following responses are returned when reading 121 words of Timer/
Counter Completion Flags through CS/CJ-series Unit built-in ports.
Units C Series CS/CJ Series CVM1 and CV Series Data words per frame
1
st
frame
Other frames
C-series
Host Link
Units
C200H-LK101/LK201/
LK202 Host Link Units
--- --- 89 words 89 words
C500-LK103/LK203
Host Link Units
3G2A5-LK101/LK201
Host Link Units
3G2A6-LK101/LK201/
LK202 Host Link Units
--- --- 89 words 60 words
Other
Boards and
Units
SRM1 built-in ports
CPM1 built-in ports
CPM1A built-in ports
CQM1-CPU
@@ built-in
ports
CQM1H-CPU
@@ built-
in ports
CQM1H-SCB
@@ built-
in ports
C200HX/HG/HE-
CPU
@@ built-in ports
C200HW-COM
@@
Communications Board
ports
CS2H-CPU@@(-EIP)
built-in ports
CS1G/H-CPU
@@H
built-in ports
CS1G/H-CPU
@@-EV1
built-in ports
CS1D-CPU
@@H built-
in ports
CJ1G/H-CPU
@@H
built-in ports
CJ1G-CPU@@ built-in
ports
CJ1M-CPU
@@ built-in
ports
CS1W-SCB21-V1/41-
V1 (unit version: Pre-
Ver. 1.2) Serial Com-
munications Board
ports
CS1W-SCU21-V1 (unit
version: Pre-Ver. 1.2)
Serial Communica-
tions Unit ports
CJ1W-SCU21/41 (unit
version: Pre-Ver. 1.2)
Serial Communica-
tions Unit ports
CVM1-CPU
@@ built-in
ports
CV-CPU
@@ built-in
ports
CV500-LK201 Host
Link Unit
121 words 125 words
1
st
frame 2
nd
frame 3
rd
frame
121 words 124 words 1 word
1
st
frame 2
nd
frame
120 words 1 word
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