2-2 Part Names and Functions 
Connector Pin Arrangement of Serial Ports A and B  
 
Pin number  Signal name  Name 
1 NC Not connected. 
2 SD Send data 
3 RD Receive data 
4  RS  Request to send 
5  CS  Clear to send 
6  +5V  5-V output (250 mA max.) 
7 NC Not connected. 
8 NC Not connected. 
9 SG Signal ground 
 
Note
  Make sure that the total current capacity of devices being supplied power is 250 mA max. be-
fore using the 5-V power supply from pin 6. The capacity of the PT's 5-V output is 250 mA 
max. at 5 V ±5%. 
 
Ethernet Connector Pin Arrangement 
 
 
 
Pin number  Signal name  Name 
1  TD+  Twisted-pair output (differential output) 
2 TD−  Twisted-pair output (differential output) 
3  RD+  Twisted-pair input (differential input) 
4 BI_D+ Protection circuit 
5  BI_D− Protection circuit 
6 RD−  Twisted-pair input (differential input) 
7 BI_D+ Protection circuit 
8 BI_D− Protection circuit 
 
When using a cable with a hood (or boot), make sure that the length for connection is at least 
15 mm, as shown in the following diagram. 
 
  
15 mm min.
2-14