Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 307

7 APPLICATION FUNCTIONS
Setting data
Setting data 3 4
Jn Network No. of the target station (1 to 239)
n1 Target station No. (1 to 64)
(S1) Target station's start device where data to be read are stored
The host station's start device where readout data will be stored
(D1)
(A contiguous area for the read data length is required.)
Read data length
n2 When the target station is Q/R/L/QnA/AnUCPU: 1 to 230 words
When the target station is other than Q/R/L/QnA/AnUCPU: 1 to 32 words
The own station's device that is turned on for one scan upon completion of the instruction
(D2)+1 also turns on if the instruction execution is failed, and the error code is stored in
(D2)
the SW0031.
(For the error code, refer to Section 8.3.)
3: Local devices and file registers for each program cannot be used as devices in setting data.
4: In addition to the setting data, the ZNRD instruction is executed using the following fixed values.
Channel used by host station: Channel 1
Arrival monitoring time (monitoring time until instruction completion): 10 seconds
Number of resends for arrival monitoring timeout: 0 times
5: The setting side is as shown below.
User : It is data the user sets in the sequence program before execution of a link dedicated instruction.
System: The programmable controller CPU stores the execution result of the link dedicated instruction.
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Description
POINT
(1) Specify the device of the other station CPU module to be read with the ZNRD
instruction within the range available for the host CPU module.
(Head device No. (S1) of read target of other station CPU module) + (Number
of read points - 1)
: Last device number at the host CPU module having the same device
name as (S1)
(2) When a CPU module on another station read by the ZNRD instruction is an
A2UCPU(S1), A3UCPU, A4UCPU, A2ASCPU(S1), or A2USCPU(S1), use
the CPU module with the following version or later.
• A2UCPU(S1), A3UCPU, A4UCPU: Version AY (manufactured since July,
1995) or later
• A2ASCPU(S1), A2USCPU(S1): Version CP (manufactured since July,
1995) or later
(Last device No. of host CPU module
MELSEC-Q
Setting side 5 Data type
User Binary 16 bits
Device name
User Binary 16 bits
System Bit
)
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