CS1D-BC042D Omron, CS1D-BC042D Datasheet - Page 277

• Manufacturer Part Number: CS1D-BC042D
• Description: CS1D Dual CPU Exp
• Manufacturer: Omron

Specifications of CS1D-BC042D

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

242
FINS Commands
Special I/O Unit Initialization
7-6-2
Data Exchange with CPU Bus Units
Serial Communications
Unit
Transferred when power is turned
on or the Unit is restarted.
Disabling Special I/O Unit Cyclic Refreshing
Special I/O Unit
FINS command transmission
The CMND(490) instruction can be added to the ladder program to issue a
FINS command to the Special I/O Unit.
FINS commands can be transmitted to Special I/O Units in other PLCs in the
network, not just the local PLC.
Special I/O Units are initialized when the PLC’s power is turned on or the
Unit’s Restart Bit is turned ON. The Unit’s Special I/O Unit Initialization Flag
(A33000 to A33515) will be ON while the Unit is initializing.
I/O refreshing (cyclic I/O refreshing or refreshing by IORF(097)) will not be
performed for a Special I/O Unit while its Initialization Flag is ON.
Ten words are allocated to each Special I/O Unit in the Special I/O Unit Area
(CIO 2000 to CIO 2959) based on the unit number set on the front of each
Unit. The data in the Special I/O Unit Area is refreshed in the CPU Unit every
cycle during I/O refreshing (just after execution of the END(001) instruction).
I/O refreshing may take too long if too many Special I/O Units are installed. If
I/O refreshing is taking too much time, the PLC Setup can be set to disable
cyclic refreshing for particular Special I/O Units. (The Special I/O Unit Cyclic
Refreshing Disable Bits are in PLC Setup addresses 226 to 231.)
If the I/O refreshing time is too short, the Unit’s internal processing will not be
able to keep pace, the Special I/O Unit Error Flag (A40206) will be turned ON,
and the Special I/O Unit may not operate properly. In this case, the cycle time
CPU Unit
Special I/O Unit
FINS command transmission
Special I/O Unit
Serial Communications Unit
Transferred each cycle
and when necessary.
CPU Unit
CPU Unit
CPU Unit
DM Area for Special I/O Units
100 words/Unit
The FINS command is transmitted
when CMND(490) has been
executed in the program.
The FINS command is transmitted
when CMND(490) has been
executed in the program.
Section 7-6