Parameter Comparisons - Mitsubishi Electric MELSEC-A Series Manual

3
REPLACEMENT OF MELSECNET (II) AND /B (REMOTE I/O NETWORK)

3.5 Parameter Comparisons

3.5.1 Parameter comparisons
The network parameters of MELSECNET (II) are deleted when the programmable controller type is
changed with the GX Developer. After changing the programmable controller type, set the
MELSECNET/H network parameters again.
(1) MELSECNET (II)  MELSECNET/H
The following shows a comparison between MELSECNET (II) network parameter settings and
MELSECNET/H network parameter settings.
The MELSECNET (II) master station is compared with the MELSECNET/H master station.
Optical loop
MELSECNET (II)
Network type
Starting I/O No.
- (No setting)
Total number of (slave) stations
Master
LB, LW assignments on the
station
master station and remote
I/O stations
LX/LY assignments on the
master station and remote
I/O stations
Refresh parameters
Remote I/O
- (No setting)
station
*1 This is set when the AnU/AnUS(H)/QnA/QnASCPU is mounted.
*2 Applied when LB/LW are set for both the first half/second half on MELSECNET (II). (For details, refer to Section 3.5.2
Parameter change example.)
*3 This is the data separation prevention function for reading/writing cyclic data of two words or more in a single operation.
(For details, refer to Section 3.7 Replacement Precautions.)
3
- 12
MELSECNET (II)
M
R1 R3
R2
*1
Master
station
*1
Remote I/O
station
MELSECNET/H
Optical loop
1R1 Network 1 1R3
: Compatible,
MELSECNET/H
Network type
Starting I/O No.
Network No.
Total number of (slave) stations
LB, LW assignments on the
master station and remote
I/O stations
Station inherent parameter
Supplemental settings-
Secured data send
Supplemental settings-
Secured data receive
LX/LY assignments on the
master station and remote
I/O stations
Refresh parameters
- (No setting)
1M
R
1R2
: Partial change required, × : Incompatible
Compat- Precautions for
ibility replacement
Mandatory for the
MELSECNET/H.
*2
*3