Explanation Of Procedure - Omron SYSMAC CS1W-SCB41-V1 Operation Manual

Basic Operating Procedure
1-9-2

Explanation of Procedure

Turning OFF the Power
Setting the Unit Number
for Serial
Communications Units
• Restart the Board by turning ON the Inner Board Restart Bit (A60800)
or restart the Unit turning ON one of the CPU Bus Unit Restart Bits
(A50100 to A50115, where the bit number corresponds to the unit
number).
• Restart the port on the Serial Communications Board by turning ON
one of the Communications Board Port Settings Change Bits (A63601
for port 1 and A63602 for port 2) or restart the port on the Serial Com-
munications Unit by tuning ON one of the Communications Unit Port
Settings Change Bits (A620 to A635: The word will be A620 + unit
number and the bit will be bit 01 for port 1 and bit 02 for port 2).
• Execute the STUP(237) instruction. The STUP(237) instruction is ex-
ecuted in the ladder program to change the serial communications
mode of a serial port. See Appendix O Changing Port Settings Using
STUP(237).
9. Execute communications.
Use the software switches or the allocated flags and words allocated in the
CIO Area in the ladder program to control communications.
The following words are allocated in the CIO Area:
Board: 25 words from CIO1900
25 words from CIO 1500 + 25 × unit number
Unit:
Check that the PLC power has been turned OFF. If the power is ON, turn it
OFF.
When a Serial Communications Unit is used, set the unit number switch at the
top of the front panel of the Unit to between 0 and F. The number that is set
will determine which words are allocated as the Setup Area in the DM Area
and which words are allocated in the CIO Area.
CS-series Units
SCU21-V1
RUN RDY
ERC ERH
SD2
SD1
Unit number switch
RD1 RD2
UNIT
No.
Section 1-9
CJ-series Units
SCU41
RUN ERC SD1 RD1 TER1
RDY ERH SD2 RD2
TERM
Unit number switch
UNIT
OFF ON
NO.
WIRE
2 4
43