App - 4 App - 4
MELSEC-Q
PPENDI
(5) Maximum number of tasks
The maximum number of tasks that can be run simultaneously is as shown below.
AD51H-S3 A1SD51S QD51(-R24)
Maximum number of
tasks
8 2 2
In the QD51 (-R24), a maximum of 2 BASIC programs can be run at a time.
(6) PCRD/PCWT command
The processing codes shown below cannot be executed with respect to the
Q/QnA CPU. Replace those codes which can be replaced.
(a) PCRD commands
Processing codes used in the A1SD51S/AD51H-S3
Contents Processing Code
Treatment
Monitoring of the device monitor register by
the PCWT command
2(&H2)
Reading of expansion file register data 4(&H4)
Monitoring the expansion file register monitor
registered by the PCWT command
5(&H5)
Reading of continuous address designation
data in the expansion file register
7(&H7)
Reading of Q/QnA series device memory
Processing code 515 (&H203)
Reading of sequence programs 8(&H8)
Reading of microcomputer programs 9(&H9)
Reading of comment data 10(&HA)
Reading of expansion comment data 11(&HB)
Cannot be used in the Q/QnA Series
Cannot be replaced
Reading of the special function module buffer
memory
12(&HC)
Reading of Q/QnA series intelligent
function module buffer memory
Processing code 533 (&H215)
Reading of programmable controller CPU
model name
13(&HD)
Reading of Q/QnA series programmable
controller CPU model name
Processing code 513 (&H201)
Reading of parameter data
(Reading of MELSECNET/10 parameters)
14(&HE)
Reading of network information 21(&H15)
Reading of routing parameters 22(&H16)
Cannot be used in the Q/QnA Series
Cannot be replaced
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