
APPENDIX
MELSEC-A
A-5
Remarks
The following functions have been added to the A(1S)J71PB92D.
(a) Mode
As compared to the AJ71PB92, the extended service mode (mode E) has been added*1 to the
A(1S)J71PB92D. In the extended service mode, up to 244 bytes of data can be sent/received
per slave station.
In the extended service mode, the layout of the I/O areas of the slave stations in the buffer
memory changes depending on the sent/received data length.
*1: The extended service mode has been added to the software version E. Refer to Appendix
1.1 for details.
(b) Communication with slave station
As compared to the AJ71PB92, the global control communication function has been added to
the A(1S)J71PB92D.
(c) Transmission specifications
The A(1S)J71PB92D differs in some transmission specifications from the AJ71PB92.
Item
AJ71PB92
A(1S)J71PB92D
Transmission speed
3[Mbps]
6[Mbps]
Maximum
transmission distance
12[Mbps]
Not supported
100 [m/segment]
Setting range of host station number
1 or 2
0 to 125
(d) I/O signals
As compared to the AJ71PB92, the following I/O signals have been added to the
A(1S)J71PB92D.
Input Signal
Description
X04
Global control end signal
X05
Global control error end signal
X10
Operation mode signal
X11
Operation mode change completion signal
Output Signal
Description
Y04
Global control request signal
Y11
Operation mode change request signal