Toshiba HX7+ ASD - CNU1;1 A and CNU2;2 A Pinout; CN3 Pinout

30 HX7+ ASD Quick Start Guide
CNU1/1A and CNU2/2A Pinout
Table 7. CNU1/1A and CNU2/2A pinout assignments.
Note: For normal operation, connect CNU1 to CNU1A. Connecting CNU1 to CNU2A will
result in a failed communications condition indicated by a continuous splash screen
display. Connect CNU1 to CNU1A and continue normally.
See the 7-Series Communications Manual (P/N 53840) for more information on the
HX7+ ASD communications protocol and system configuration requirements.
CN3 Pinout
CN3 is used for RS232/RS485 serial communications.
Table 8. CNU3 pinout assignments.
Pin #
CNU1 Pinout
(Control PCB)
CNU1A Pinout
(keypad)
Pin #
CNU2 Pinout
(Control PCB)
CNU2A Pinout
(keypad)
1 P24 P24 1 P24 P24
2 Gnd Gnd 2 Gnd Gnd
3 Tx (-) RXA 3 Rx Tx
4 Rx (+) TXA 4 Gnd Gnd
5 Rx (-) TXB 5 Tx Rx
6 Tx (+) RXB 6 Gnd Gnd
7 RS232/RS485 CNU3 7 Open Open
8 Gnd Gnd 8 Gnd Gnd
Pin Number
CNU3 Pinout
(Control PCB)
1 RS232/RS485 Signal +
2 RS232/RS485 Signal -
3 RS232/RS485 Signal Gnd
4Shield
WARNING