KEYENCE SR-750 Series - Manual (Page 87)

87 E SR-750 UM
Configuring the SYSMAC Series
RS-232C Interface
Set communication conditions with the CX-Programmer.
„ CPU built-in port
PLC system configuration →Upper link port (serial port)
* When communication configuration is established as a standard, baud rate and
parameters are fixed as above.
„ Serial communication unit/board
CJ1W-SCU□□(-V1)
CS1W-SCU□□-V1
CS1-SUB□□-V1
I/O table/unit configuration
Communication
configuration
User configuration
Baud rate 9600 bits/s
Parameter 7,2,E
Mode Upper link
ID No. 0
Presence or absence of
optional configuration
Optional configuration
Communication mode Upper link
Data length 7 bits
Stop bit 2 bits
Parity Even
Transmission rate 9600 bps
CTS control None
Upper link ID No 0
9-3
Device Assignment
To use the SR-750 Series over the PLC link, functions of the SR-750 Series need
to be assigned to the PLC devices.
For the SR-750 Series, the first address of each device is assigned in response to
target function.
• Control region : Device used to write a command from the PLC. One channel
is used for device assignment.
• Response region : Device used to write a response from the SR-750 Series.
One channel is used for device assignment.
• Data region : Device used to write alternate instructions of the SR-750
Series and result data from the SR-750 Series. Occupies a
maximum of 54 devices with serial numbers.
Function Assignment of Control Region, Response Region, and Data Region
This section describes assignment of functions of each region.
Assignment of Control Region Functions
When the control region address A is specified, functions are assigned in order as
shown below starting with the specified beginning address.
* When performing the trigger input ON/OFF using the PLC timing area, set "PLC
link timing input" to "Enable".
Assignment of Response Region Functions
When the response region address B is specified, functions are assigned in order
as shown below starting with the specified beginning address.
* Do not use the reserved area.
A15 A14 A13 A12 A11 A10 A09 A08 A07 A06 A05 A04 A03 A02 A01 A00
Reserved area
Address Description Data description
SR-750
Write
PLC Write
A00 PLC timing area
0:Instruction for timing OFF
1: Instruction for timing ON
× ○
A01
Data write processing
method 0: Real time processing
1: Sequential processing
× ○
A02
Sequential processing
Data write enabled 0: Data write disabled
1: Data write enabled
× ○
B15 B14 B13 B12 B11 B10 B09 B08 B07 B06 B05 B04 B03 B02 B01 B00
Reserved area
Address Description Data description
SR-750
Write
PLC Write
B00
PLC timing input
response area 0: Timing OFF
1: Instruction for timing ON
○ ×
B01 Reserved area ― ― ―
B02
Sequential processing
Data write request 0: No data
1: Data write request
○ ×
B03
Sequential processing
Data write complete 0: Data write incomplete
1: Data write complete
○ ×
B04
Real time processing
Data being written 0: No data being written
1: Data being written
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