Mitsubishi Electric MOTION CONTROLLERS Q172DCPU Programming Manual page 121

4 AUXILIARY AND APPLIED FUNCTIONS
<Example 1>
Personal
computer
<Example 2>
(3) Network configuration via the RS-422/485
(a) It can access the other CPU via the RS-422/485 from the programming
software packages (GX Developer, MT Developer, etc.) of the personal
computer connected with the CPU or serial communication module in
USB/RS-232.
(b) The access range of above (1) is only the CPU on the RS-422/485 which a
system connects it to, and it can select RS-422/485 network to connect by
specifying the I/O No. of the C24 module.
Personal
computer
USB/ RS-232
RS-232
QnUD(H) Q173D C24 C24
CPU CPU
QnUD(H) Q173D C24
CPU CPU
QnUD(H) Q173D C24 C24
CPU CPU
QnUD(H) Q173D C24
CPU CPU
: Communication is possible
: Communication is impossible
RS-422/485
QnUD(H) Q173D C24
CPU CPU
RS-422/485
QnUD(H) Q173D C24
CPU CPU
RS-422/485
QnUD(H) Q173D C24
CPU CPU
RS-422/485
QnUD(H) Q173D C24
CPU CPU
4 - 30
C24 : Serial communication module
QnUD(H) Q173D C24 C24
CPU CPU
QnUD(H) Q173D C24 C24
CPU CPU
Personal
computer
USB/
RS-232
QnUD(H) Q173D C24 C24
CPU CPU
QnUD(H) Q173D C24 C24
CPU CPU
RS-422/485
RS-422/485