1 FUNCTIONS
1.15 Simple CPU Communication Function (RJ71EN71, RnENCPU (Network Part))
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1
■When the communication destination is an SLMP-compatible device (QnA-compatible 3E
frame)
Applicable devices differ depending on the device. For applicable devices, refer to the manual for the device used.
The device types that can be set are X, Y, M, L, B, SB, SM, D, W, SW, SD, R, and ZR. The accessible device range of the
communication destination is the range which can be specified with the subcommand (0000) of the SLMP (QnA-compatible
3E frame of the MC protocol).
The following SLMP commands are sent to the external device.
[When the communication pattern is "Read"]
[When the communication pattern is "Write"]
■When the communication destination is an MODBUS/TCP-compatible device
Applicable devices differ depending on the device. For applicable devices, refer to the manual for the device used.
The device types that can be set are Coil, Input, Input Register, and Holding Register.
Input and Input Register can be set only when the communication pattern is "Read".
Operation during the simple CPU communication
■Operation of the own station
Since the own station operates without depending on the operating status of the CPU module, the simple CPU
communication is performed even when the CPU module is in the STOP state because of stop error. When an initial
communication error occurs, communications of the corresponding setting numbers are stopped and ones of the setting
numbers, where no error occurs will operate.
If the communication destination sends a response, data is transferred to the system area for the simple CPU communication.
Data inconsistency will not occur in one setting since processing is executed for each setting.
■Operation of the communication destination
The operation differs depending on the communication destination.
Communication destination Data operation in one setting
MELSEC iQ-R (built-in Ethernet) Since the data in one setting is communicated at the same timing, data inconsistency will not occur.
MELSEC iQ-R (Ethernet module)
MELSEC iQ-F (built-in Ethernet)
MELSEC-Q (built-in Ethernet)
MELSEC-Q (Ethernet module)
MELSEC-L (built-in Ethernet)
MELSEC-L (Ethernet module)
OMRON (CS/CJ series) Depends on the external device of the communication.
KEYENCE (KV series)
Panasonic (FP2SH series)
Panasonic (FP7 series)
YASKAWA MP3000 series
YASKAWA MP2000 series
Yokogawa FA-M3 series
SLMP-compatible device (QnA-compatible 3E
frame)
MODBUS/TCP-compatible device
0CH 00H 04H50H 00H 00H 00H 00H00H 00H 01H 00H03HFFH FFH
Subheader Request
destination
network
No.
Request
destination
station No.
Request
destination
module I/O
No.
Request
destination
multidrop
station No.
Request
data length
Monitoring
timer
Command Subcommand Device
code
Start device No. Number of
device points
50H 00H 00H 00H 00H00H 00H 01H 00H14H03HFFH FFH
Subheader Request
destination
network
No.
Request
destination
station No.
Request
destination
module I/O
No.
Request
destination
multidrop
station No.
Request
data length
Monitoring
timer
Command Subcommand Device
code
Start device No. Number of
device points
Write data
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