Denso BHT-500B User Manual page 205

BHT-500B
CU-521
The USB interface on the CU-521 is USB1.1 (Full-speed) compliant, with a Type Mini-B receptacle.
CU-511
The CU-511 has an IEEE802.3-compliant Ethernet interface port (10base-T).
Ethernet Interface Port (RJ45 jack) on the CU-511
188
Pin No. Signal
1 TD+
2 TD-
3 RD+
4 N.C.
5 N.C.
6 RD-
7 N.C.
8 N.C.
Functions
Send data
Send data
Receive data
No connection
No connection
Receive data
No connection
No connection