Basler Electric DGC-2020HD - Manual (Page 33)

9469300990 Rev B 23
Terminal Description
20 (OUT 5) Programmable output 5
21 (OUT 6) Programmable output 6
22 (COM 4, 5, 6) Common connection for outputs 4, 5, and 6
23 (OUT 7) Programmable output 7
24 (OUT 8) Programmable output 8
25 (OUT 9) Programmable output 9
26 (COM 7, 8, 9) Common connection for outputs 7, 8, and 9
27 (OUT 10) Programmable output 10
28 (OUT 11) Programmable output 11
29 (OUT 12) Programmable output 12
30 (COM 10, 11, 12) Common connection for outputs 10, 11, and 12
CAN Interface
These terminals provide communication using the SAE J1939 protocol or the MTU protocol and provide
high-speed communication between the DGC-2020HD and an ECU on an electronically controlled
engine. Connections between the ECU and DGC-2020HD should be made with twisted-pair, shielded
cable. CAN interface terminals are listed in Table 13. For typical CAN connections, refer to the Typical
Connections chapter.
Table 13. CAN Interface Terminals
Terminals Description
51 (CAN 1 L) CAN 1 low connection
52 (CAN 1 H) CAN 1 high connection
53 (SHIELD) CAN drain connection
54 (CAN 2 L) CAN 2 low connection
55 (CAN 2 H) CAN 2 high connection
Note
1. If the DGC-2020HD is providing one end of the J1939 bus, a
120
Ω, ½ watt terminating resistor should be installed across
terminals 51 (CAN1L) and 52 (CAN1H) or 54 (CAN2L) and 55
(CAN2H)
2. If the DGC-2020HD is not providing one end of the J1939 bus, the
stub connecting the DGC-2020HD to the bus should not exceed
914 mm (3 ft) in length.
3. The maximum bus length, not including stubs, is 40 m (131 ft).
4. The J1939 drain (shield) should be grounded at one point only. If
grounded elsewhere, do not connect the drain to the DGC-
2020HD.
RS-485 Interface
DGC-2020HD controllers can be monitored and controlled via a polled network using the Modbus™
protocol. The RS-485 port supports a user-selectable baud rate of 1,200, 2,400, 4,800, 9,600, 19,200,
38,400, 57,600, or 115,200. Seven or eight data bits per character can be selected. Odd, even, or no
DGC-2020HD Terminals and Connectors