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MELSEC-QnA
15 FUNCTIONS (FUNCTION VERSION B OR LATER)
15
15. FUNCTIONS (FUNCTION VERSION B OR LATER)
The functions added in the function version B or later are explained.
15.1 List of Functions
A list of functions is shown in Table 15.1.
Table 15.1 List of functions
Availability of functions
Item Function overview
Reference
section
Master
station
Local
station
Standby
master
station
Parameter registration
function
Sets parameters from a peripheral device as a part of CPU
parameters. The following two parameters are available:
• Network parameters
• Automatic refresh parameters
Section
15.2
1 1
A
utomatic refresh
function
Cyclic transmission data, such as RX and RY, can be refreshed to a
desired device by the END processing, using the software package
(
2).
Section
15.3
Synchronous
mode
Data link can be performed using the scan
synchronized with the sequence program.
Section
15.4
Scan synchronous
function
Asynchronous
mode
Data link can be performed using the scan not
synchronized with the sequence program.
Section
15.4
Standby master
function
Data link can be continued when an error occurs at the master
station, by switching to the standby master station.
Section
15.5
Transient transmission can be performed to the intelligent device and
local stations using dedicated instructions.
Dedicated instructions also facilitate read/write of data with
handshake from/to remote devices.
Section
15.6
Dedicated instructions
Device read/write with respect to the CPU in the specified station is
possible using dedicated instructions.
Section
15.6
2 2 2
Communication
instruction
Data communication with other stations is possible.
Data read/write with other stations is also possible.
Section
15.7
2 3
2 3
2 3
Remote I/O net mode
Communication can be performed only with the remote I/O station
without setting parameters.
Section
15.8
4
Temporary error
invalid station
specification function
Replacement of modules can be performed online without detecting
an error at the corresponding remote station.
Section
15.9
Online test function
Line testing and control of link such as starting up and stopping can
be performed from a peripheral device.
Section
15.10
Monitor/diagnosis
function
Monitoring and diagnosing can be performed from a peripheral
device.
Section
15.11
1 Network parameter setting is not necessary.
2 It can be used with software version J (manufactured in Jan., 1998) and later.
3 The CPU of the specified station can only be used with QnACPU.
4 Available with software version P (manufactured in Sep., 1998) or later.
15.2 Parameter Registration Function
This function sets parameters as a part of CPU parameters from a peripheral device,
using SW
IVD/SW NX-GPPQ/GX Developer. There are two types of parameters:
network parameter and automatic refresh parameter.
For SW
IVD/SW NX-GPPQ/GX Developer, refer to the operating manual supplied
with the product.
POINT
• The parameter registration function is effective only up to eight master modules. When using
nine or more master modules, it must be done from the sequence program.
• The "Y" at the master module will be ignored while using the parameter registration function.