Overview; Starting Data Links - Omron CQM1H-SCB41 Operation Manual

Overview

7-1

Overview

PC Setup Setting
Port 1 Port 2
DM 6555 DM 6550 04 to 07
7-1-1

Starting Data Links

110
If two PCs are linked one-to-one by connecting them together through RS-
232C or 4-wire RS-422A/485 cable, they can share up to 64 words of their LR
areas. The 1:1 Data Links are the same as normal Data Links in that data is
not shared bidirectionally, i.e., the link words written by one PC are transferred
to the other PC.
One of the following three ranges of words can be set to be linked:
LR 00 to LR 63, LR 00 to LR 31, or LR 00 to LR 15
A 1:1 Data Link communications system can be created between the CQM1H
and another CQM1H, or between the CQM1H and the CQM1, C200HX/HG/
HE, C200HS, CPM1, CPM1A, CPM2A, CPM2C, or SRM1(-V2).
One of the PCs is set as a 1:1 Data Link master and the other as a 1:1 Data
Link slave. The linked words are separated into two groups of words, and the
words written by each PC is transferred to the other PC, as illustrated in the
following diagram.
For example, if LR 00 to LR 63 are linked, the status of LR 00 to LR 31 written
by the master CQM1H will be transferred to LR 00 to LR 31 of the slave
CQM1H, and the status of LR 32 to LR 63 written by the slave CQM1H will be
transferred to LR 32 to LR 63 of the master CQM1H.
CQM1H or
other C-series PC
Serial Communications Board
LR 00
to
LR 31
LR 32
to
LR 63
The words in the LR area that will be linked are set in the PC Setup as shown
in the following table.
Bits Function
Link words for 1:1 link
Connect two PCs one-to-one through RS-232C or 4-wire RS-422A/485 cable,
make the proper settings in the PC Setup, and turn ON the power supplies.
The 1:1 Data Link will start automatically.
CQM1H or other C-series PC
Link
RS-232C
CQM1H or
other C-series PC
LR 00
Master area
to
(sent)
LR 31
LR 32
to
Slave area
(received)
LR 63
Setting
0 Hex: LR 00 to LR 63
1 Hex: LR 00 to LR 31
2 Hex: LR 00 to LR 15
Section 7-1
CQM1H or
other C-series PC
Master area
(received)
Slave area
(sent)
Master words Slave words
LR 00 to LR 31 LR 32 to LR 63
LR 00 to LR 15 LR 16 to LR 31
LR 00 to LR 07 LR 08 to LR 15