App - 2 App - 2
MELSEC-Q
APPENDIX
App.
Appendix 2 Differences between the QJ71DN91 and the AJ71DN91/A1SJ71DN91
The following table lists the differences between the QJ71DN91 and the
AJ71DN91/A1SJ71DN91:
Model name
Function
QJ71DN91
AJ71DN91/A1SJ71DN91
DeviceNet master/slave function
DeviceNet master function and DeviceNet
slave function
DeviceNet master function only
Number of I/O points of the DeviceNet
master function
Input 4096 points, output 4096 points
Input 2048 points, output 2048 points
Auto configuration function
Available
Not available
Auto refresh function with CPU
Available (requires GX Configurator-DN)
Not available
Constant scan
Available
Not available
Hardware test/communication test function
Available
Not available
Parameter setting method
3 types
• Setting with sequence programs
• Setting with GX Configurator-DN
• Setting with the auto configuration function
2 types
• Setting with sequence programs
• Setting with the configuration software