Omron SYSMAC CV Series Operation Manual page 11

Overview
1-1-4 Differences between C-series and CVM1/CV-series Host Links
Frame Size when Dividing Transmissions into Multiple Frames
C-mode Commands Not Supported by CVM1/CV-series Host Links
Communications Port Signals Different communications signals are used for Host Link communications for the
4
This section lists the differences between C-series and CVM1/CV-series Host
Links. Use this information as reference when converting from the C Series to
the CVM1/CV Series.
Item C-series Host Links
Frame size A total of 29 words of
data is returned in
each frame.
Applicable C-series Host Link
models Units
Note The user program may need to be altered to enable correct reading of data for
the above difference in frame size. Be sure to check operation and correct the
program as required.
Item C-series Host Links
Supported All C-mode
C-mode commands
commands
Note When the model is changed so that the above commands are no longer sup-
ported, change the user program to perform the same operation using other C-
mode commands or FINS commands.
C Series and CVM1/CV Series depending on the model and the type of port. Dif-
ferences in the signals are listed below by port.
RS-232C Port
Signals
ST1, ST2, RT
If the SR1, SR2, and RT signals are not used, the same communications cable
can be used even if the model is changed. If the SR1, SR2, and RT signals are
used, synchronized transfer of data will not be possible if the model is changed.
Change the system to sync on the CD (carrier detected) signal. Part of the cable
wiring must also be changed.
RS-422 Port
Signal
SG
A total of 30 words of data is returned in each
frame.
Built-in RS-232C ports or peripheral ports on
SRM1, CPM1, CPM1A, CQM1, C200HS,
C200HX/HG/HE, and other CPU Units.
CVM1/CV-series built-in Host Links
CV500-LK201 Host Link Unit
The following C-mode commands are
supported only by built-in Host Links for CPU
Unit of version 2 (-V2) or later and cannot be
used on other CVM1/CV-series Host Links.
RL/WR:
RH:WH:
CR:
R#/R$/R%: SV READ 1/2/3
W#/W$/W%: SV WRITE1/2/3
C-series Host Links
Used.
C-series Host Links
Used by some models:
SG Used
C200H-LK202-V1
3G2A6-LK202-EV1
3G2A5-LK201-EV1
SG Not Used
C500-LK203
Section 1-1
CVM1/CV-series Host Links
CVM1/CV-series Host Links
LINK AREA READ/WRITE
HOLDING AREA READ/WRITE
DM AREA READ/WRITE
CVM1/CV-series Host Links
Not used.
CVM1/CV-series Host Links
Not used.