Omron CJ1W-SCU22, Руководство по эксплуатации

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7-5
7 Using Modbus-RTU Slave Mode
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
7-2 De
vic
e V
ariab
les f
o
r CJ-series Un
it an
d S
ystem-defi
n
ed
V
ariables (Mo
d
b
u
s-R
T
U Sla
ve Mo
de)
7
7-2
-1 De
vice V
ar
iab
le f
or CJ-ser
ies Unit f
or System
S
e
ttings
7-2 Device Variables for CJ-series Unit
and System-defined Variables
(Modbus-RTU Slave Mode)
This section describes the device variables for CJ-series Unit and system-defined variables used in the
Modbus-RTU Slave Mode.
The Serial Communications Unit uses the following device variables for CJ-series Unit to perform Sys-
tem Settings when Modbus-RTU Slave communications are used.
7-2-1 Device Variable for CJ-series Unit for System Settings
Device variable for CJ-series Unit
Type R/W Name Function
Port 1 Port 2
*_P1_PortCfg *_P2_PortCfg WORD RW Port Settings Bit 15: User-specified setting inclu-
sion (*)
Bits 08 to 11: Serial communica-
tions mode
(A hex: Modbus-RTU Slave)
Bit 01: Parity (Yes/No)
Bit 00: Parity (Even/Odd)
*_P1_SerSetCfg *_P2_SerSetCfg BOOL RW User-speci-
fied Setting
Inclusion FALSE: Default
TRUE: User settings
Default: FALSE
There is no specific
device variable for
CJ-series Unit to ref-
erence the serial
communications
mode.
When you set this
setting, set to bits 08
to 11 of
*_P1_PortCfg.
There is no specific
device variable for
CJ-series Unit to
reference the serial
communications
mode.
When you set this
setting, set to bits
08 to 11 of
*_P2_PortCfg.
Bit string RW Serial Com-
munications
Mode Serial communications mode
3 hex: No-protocol
6 hex: Protocol Macro
9 hex: Serial Gateway
A hex: Modbus-RTU Slave
F hex: Loopback Test
Default: 0
*_P1_ParityYNCfg *_P2_ParityYNCfg BOOL RW Parity FALSE: Yes
TRUE: No
Default: FALSE
*_P1_ParityBitCfg *_P2_ParityBitCfg BOOL RW Parity
Even/Odd FALSE: Even
TRUE: Odd
Default: FALSE