Filter
Top Products
3
7. PLC2Way 3-47
Serial Communications
Processing Cycle
The processing cycle on the V7 series with the PLC2Way function is explained.
Fig. a. When the temperature control network/PLC2Way table is not used:
Fig. b. When the temperature control network/PLC2Way table is used:
When the temperature control network/PLC2Way table is not used (Fig. a), PLC data is not
read while the data is read from the PLC connected at the MJ port. When the temperature
control network/PLC2Way table is used (Fig. b), PLC data is read while the data is read
from the PLC connected at the MJ port. Consequently, it is possible to communicate with
the PLC connected at the MJ port without reducing the processing capacity between the V7
↔ the PLC.
When the temperature control network/PLC2Way table is used:
If periodical reading of the PLC data is performed while the PLC connected at the MJ
port is accessed using a macro command, the macro execution may be delayed. It is
possible to temporarily stop periodical reading from the PLC connected at the MJ port
using the system memory address ($s762). For more information, refer to page 3-51.
PLC data 1 PLC data 2
PLC data 1
connected at
the MJ port
PLC data 3
PLC data “n”
connected at
the MJ port
PLC data “n”
1 cycle
PLC data 1 PLC data 2
PLC data 1
connected at
the MJ port
PLC data 3
PLC data “n”
connected at
the MJ port
PLC data “n”
PLC data 2
connected at
the MJ port
1 screen data read cycle
1 data read cycle from the PLC connected at the MJ port