Curtis 1239E - COMMUNICATIONS PORT SPECIFICATIONS

Return to TOC Curtis 1239E-1269E Manual, os 37.0 RevA – May 2021
2 — INSTALLATION AND WIRING
pg. 19
Communications Ports
Separate CAN and serial ports provide complete communications and programming capability for all
user available controller information.
e Curtis 1313 handheld programmer and 1314 PC programmer’s 1309-serial-interface-device plug
into a connector* wired to pins 28 and 29, along with ground (pin 7) and the +12V power supply (pin
25); see wiring diagram, Figure 5. e Curtis “Spy” Model 840 display will connect the serial-port pins
as shown in Figures 5 and 6).
Wiring the CAN Term H and CAN Term L pins together provides a local CAN termination of 120 Ω;
keep the length of these wires short. CAN Term H and CAN Term L should never be connected to any
external wiring.
COMMUNICATIONS PORT SPECIFICATIONS
Name Pin
Supported
Protocol / Devices
Data Range Protected Voltage ESD Tolerance
CAN H 23
CANopen, other 11-bit or 29-
bit identier protocols
up to 1 Mbit/s
–0.5V to 20V
± 8 kV
(direct strike)
CAN L 35
CAN Term H 21
(no connection to
external wiring)
CAN Term L 34
Serial TX 28
Curtis 840 Display,
1313 Handheld Programmer,
1314 PC Programming Station
as required,
9.6 kbit/s to 56
kbit/s
–0.3V to 20V
Serial RX 29
For CANbus networks at dierent voltage references, use the Curtis CAN isolation module, model 1360.
13
24
1
23
35
12
Quick Link:
Figures 5 & 6 wiring
diagram p.12-13
* Molex Mini-Fit Jr. dual-row, 4 circuits, vehicle harness plug (e.g., p/n 39-01-2046)