App - 12                          App - 12 
MELSEC-Q 
APPENDICES 
Terminal 
Block 
Number 
QY50 A1SY50   
Terminal 
Block 
Number 
QY80 A1SY80 
TB9 Y08 12/24VDC   TB9 Y08 COM1 
TB10 Y09 COM1    TB10 Y09  0V 
TB11 Y0A  Y08    TB11 Y0A  Y08 
• 
• 
• 
• 
• 
• 
• 
• 
• 
 
• 
• 
• 
• 
• 
• 
• 
• 
• 
TB16 Y0F  Y0D    TB16 Y0F  Y0D 
TB17 12/24VDC  Y0E    TB17  COM  Y0E 
TB18 COM  Y0F    TB18  0V  Y0F 
TB19 — 12/24VDC   TB19 — COM2 
TB20 — COM2    TB20 —  0V 
 
POINT 
 
The 40-pin connector used with the MELSEC-AnS series I/O module can be used 
intact with the MELSEC-Q series I/O module. 
The 37-pin D-sub connector used with the MELSEC-AnS series I/O module is the 
same in wiring as, but opposite in cable pulling direction to, the MELSEC-Q series 
I/O module. (The conventional cable for A6TB cannot be used.)