Wiring Ports; Cqm1 Host Link Communications - Omron CPM1 Programming Manual

Communications Functions
Transmission Frame
Format
Baud Rate
Transmission Delay Time
1-9-2

Wiring Ports

1-9-3

CQM1 Host Link Communications

Setting Stop bits
00 1
01 1
02 1
03 1
04 1
05 1
06 1
07 1
08 1
09 1
10 1
11 1
Setting
00
01
02
03
04
Depending on the devices connected to the RS-232 port, it may be necessary
to allow time for transmission. When that is the case, set the transmission
delay to regulate the amount of time allowed.
DM 6647: RS-232C port
DM 6652: Peripheral port
Transmission delay (4 digits BCD; unit: 10 ms)
Default: No delay
Refer to the CQM1 Operation Manual, CPM1 Operation Manual, CPM1A
Operation Manual or SRM1 Master Control Units Operation Manual for infor-
mation on wiring the communications ports.
Host link communications were developed by OMRON for the purpose of con-
necting PCs and one or more host computers by RS-232C cable, and control-
ling PC communications from the host computer. Normally the host computer
issues a command to a PC, and the PC automatically sends back a response.
Thus the communications are carried out without the PCs being actively
involved. The PCs also have the ability to initiate data transmissions when
direct involvement is necessary.
In general, there are two means for implementing host link communications.
One is based on C-mode commands, and the other on FINS (CV-mode) com-
mands. The CQM1 supports C-mode commands only. For details on host link
communications, refer to SECTION 6 Host Link Commands.
Data length
7 1
7 1
7 1
7 2
7 2
7 2
8 1
8 1
8 1
8 2
8 2
8 2
Baud rate
1,200 bps
2,400 bps
4,800 bps
9,600 bps
19,200 bps
Bit
Section 1-9
Stop bits Parity
Even
Odd
None
Even
Odd
None
Even
Odd
None
Even
Odd
None
15 0
93