DESCRIPTION

The Curtis Model 1356/1356P CANbus I/O expansion 

module provides accurate control of up to 5 fingertip joysticks, 

or can be used to add additional digital and analog I/O to 

any CANopen* based control system. It is available as a 

conformally coated PCB (model 1356) or in an epoxy filled 

enclosure (1356P).

APPLICATION

Expands I/O capabilities on any CANopen* vehicle control 

system. Typically used on materials handling trucks, aerial lift 

platforms, airport ground support equipment, compact construction 

equipment and sweeper-scrubber floor care machines.

FEATURES

• Eighteen multi-purpose I/O pins provide simple, flexible vehicle 

control system expansion.

• Two high-frequency (1A, 3A) PWM driver outputs support a 

variety of vehicle system loads (i. e. horn, buzzer, relays).

• Five analog inputs which can be enabled for voltage or 

resistance measurement, supporting a variety of sensor and 

voltage inputs.

• Quadrature encoder input provides rotation and directional sensing.

• 12V unregulated and +5V regulated power supplies (200mA 

total) support low current control loads (electronic throttles) as 

well as sensing based loads (resistive senders, encoders).

• Serial port option allows direct access by Curtis 1313 / 1314 

programming tools, Curtis Model 840 Display or status 

LED configuration.

• Configurable CANbus connection provides communication with 

other CANbus enabled devices.

• Multi-purpose I/O pins in a compact, low cost, PCB based module.

• Short circuit protection on all output drivers limits potential for 

load, device circuit damage.

• Analog inputs can also be used as virtual digital inputs with 

programmable On/Off thresholds and variable filters.

• Built-in programmable dither amount & frequency allow precise 

hydraulic proportional valve positioning.

• All outputs can also be used as ‘active high’ digital inputs.

• Constant current or constant voltage output modes provide 

accurate control.

• Built-in coil fly-back diodes reduce voltage spikes when driving 

inductive loads/coils.

• Compact PCB design 100 X 70 mm overall size or epoxy filled 

enclosure, 24 pin & 4 pin Molex connectors.

• PCB version must be mounted within a protective enclosure. PCB 

is conformally coated for protection from moisture and dust.

• Epoxy enclosed model 1356P mechanically sealed to IP65. IP65 

rating does not apply to Molex connectors.

• Optional status LEDs provides immediate, visual status of vital 

system functions.

• Support of 12–36V or 36–80V nominal supply voltages.

• 12–36V models are suitable for use on internal combustion 

engine applications.

www.curtisinstruments.com

CANBUS I/O EXPANSION MODULE

MODELS 1356 / 1356P

*Contact your local Curtis sales office for SAE J1939 support options.
MODELS 1356 / 1356P

SPECIFICATIONS

Meets or complies with relevant US and International Regulations:

EMC: Designed to the requirements of EN12895.

Safety: Designed to the requirements of:

EN1175-1:1998+A1:2010.

EN (ISO) 13849-1.

UL583 recognition pending.

Regulatory compliance of the complete vehicle system with the controller installed is the responsibility of the vehicle OEM.

Mating Molex connector information: Molex part number 39-01-2245, 39-01-2045, contact pins 39-00-0059.

NOTE: It is the responsibility of the vehicle designer / system installer to insure PCB module is mounted in such a way as to provide 

adequate protection from dust and / or moisture ingress.

MODEL CHART

Model I/O Pins Voltage Digital 

Inputs

PWM 

Outputs

Analog 

Inputs

Encoder 

Inputs

Serial 

Port

5V & 12V 

Ext Power 

Supply

CAN Term 

Resistor

1356-4101 18 12–36V 11 2 5 1 Yes Yes No

1356-6101 18 36–80V 11 2 5 1 Yes Yes No

1356P-4101 18 12–36V 11 2 5 1 Yes Yes No

1356P-6101 18 36–80V 11 2 5 1 Yes Yes No

The Curtis Models 1236E and 1238E 

provide advanced control of AC 

induction motors performing on-vehicle 

traction drive or hydraulic pump duties.

The Curtis Model 1222 is an AC 

induction motor controller for ‘steer by 

wire’ electric power steering systems.

The Curtis Model 1313 Handheld 

Programmer is ideal for setting 

parameters and performing 

diagnostic functions.

SYSTEM ACCESSORIES

FUNCTIONAL SAFETY DATA CHART

Safety Function PL Designated Architecture MTTFd DC%

Incorrect Measurement Transmission c Category 2 >30 yrs >60

Un-commanded Output c Category 2 >30 yrs >60
MODELS 1356 / 1356P

TYPICAL WIRING DIAGRAM

J1-8 INPUT 13

J1-19 INPUT 12

J1-7 INPUT 11

J1-18 INPUT 10

J1-24 I/O GND

ANALOG INPUT 3

J2-2 I/O GND

5

8

6 DISPLAY

B–

CAN PORT

CONTACTOR

PROPORTIONAL VALVE

J1-6

J1-17

J1-5

J1-16

J1-4

J1-15

J1-3

SWITCH

J1-14

J1-2

INPUT 9

INPUT 8

INPUT 7

INPUT 6

INPUT 5

INPUT 4

INPUT 3

INPUT/OUTPUT 2

INPUT/OUTPUT 1

+5V

ANALOG INPUT 4/ENCODER A

ANALOG INPUT 5/ENCODER B

ANALOG INPUT 1

ANALOG INPUT 2

+12V

Tx

Rx

REVERSE POLARITY

PROTECTION

ENCODER

RESISTIVE THROTTLE,

RTD, etc.

0-15V VOLTS IN

J1-12

J1-10

J1-22

J1-20

J1-23

J1-11

SERIAL PORT

4 PIN MOLEX

4

3

1

2

J1-9

J1-21

J2-4

J2-3

J2-1

J1-13

CAN H

J1-1

KEYSWITCH

BATTERY

POWER

FUSE

B+

CAN L
MODELS 1356 / 1356P

DIMENSIONS mm

 100.0 

 92.4 

 3.8 

 3.8 

 62.4 

 70.0 

 60.7 5X Ø3.50 

J1 CONNECTOR J2 CONNECTOR 4XR3 

1 12

13 24

1 2

3 4

 14.4 ±1.5 

 1.60 

 16.3 

NOTES:

MATING CONNECTORS:

 1.J1 CONNECTOR: MOLEX #39-01-2

 J2 CONNECTOR: MOLEX #39-01-2

 2.CONTACT PINS: MOLEX #39-00-00

J1 CONNECTOR

PIN NO. DESCRIPTION PIN NO. DESCRIPTION

1 B+ 13 B2 INPUT/OUTPUT1 14 INPUT/OOUPUT 2

3 INPUT 3 15 INPUT 4

4 INPUT 5 16 INPUT 6

5 INPUT 7 17 INPUT 8

6 INPUT 9 18 INPUT 10

7 INPUT 11 19 INPUT 12

8 INPUT 13 20 ANALOG INPUT 1

9 ANALOG INPUT 2 21 ANALOG INPUT 3

10 ANALOG INPUT 4/ENCODER A 22 ANALOG INPUT 5/ENCODER B

11 CAN H 23 CAN L

12 +5V 24 I/O GND

J2 CONNECTOR

PIN NO. DESCRIPTIO

1 SERIAL Rx/LED EN

2 I/O GND

3 SERIAL Tx/LED OU

4 +12V

J1 CONNECTOR

Pin No. DESCRIPTION Pin No. DESCRIPTION

1 B+ 13 B–

2 INPUT/OUTPUT1 14 INPUT/OUTPUT2

3 INPUT 3 15 INPUT 4

4 INPUT 5 16 INPUT 6

5 INPUT 7 17 INPUT 8

6 INPUT 9 18 INPUT 10

7 INPUT 11 19 INPUT 12

8 INPUT 13 20 ANALOG INPUT 1

9 ANALOG INPUT 2 21 ANALOG INPUT 3

10 ANALOG INPUT 4 / ENCODER A 22 ANALOG INPUT 5 / ENCODER B

11 CAN H 23 CAN L

12 +5V 24 I/O GND

J2 CONNECTOR

Pin No. DESCRIPTION

1 SERIAL Rx / LED ENABLE

2 I/O GND

3 SERIAL Tx / LED OUTPUT

4 +12V

1356
MODELS 1356 / 1356P

WARRANTY

 is a trademark of Curtis Instruments, Inc. Specifications subject to change without notice ©2015 Curtis Instruments, Inc. 50285 REV B 9/15

Two year limited warranty from time of delivery.

DIMENSIONS mm

J1 CONNECTOR

Pin No. DESCRIPTION Pin No. DESCRIPTION

1 B+ 13 B–

2 INPUT/OUTPUT1 14 INPUT/OUTPUT2

3 INPUT 3 15 INPUT 4

4 INPUT 5 16 INPUT 6

5 INPUT 7 17 INPUT 8

6 INPUT 9 18 INPUT 10

7 INPUT 11 19 INPUT 12

8 INPUT 13 20 ANALOG INPUT 1

9 ANALOG INPUT 2 21 ANALOG INPUT 3

10 ANALOG INPUT 4 / ENCODER A 22 ANALOG INPUT 5 / ENCODER B

11 CAN H 23 CAN L

12 +5V 24 I/O GND

J2 CONNECTOR

Pin No. DESCRIPTION

1 SERIAL Rx / LED ENABLE

2 I/O GND

3 SERIAL Tx / LED OUTPUT

4 +12V

1356P

 110.0 

 116.0 

 126.0 

2x Ø4.50 

 4xR8 

 25.0 

 32.0 

 80.0 

J1 CONNECTOR J2 CONNECTOR

1 12

13 24

1

3

2

4

 5.0 

 25.0 

 17.0 

NOTES:

MATING CONNECTORS:

 1.J1 CONNECTOR: MOLEX #39-01-2245

 J2 CONNECTOR: MOLEX #39-01-2045

 2.CONTACT PINS: MOLEX #39-00-0059. 

J1 CONNECTOR J2 CONNECTOR

IN NO. DESCRIPTION PIN NO. DESCRIPTION

1 B+ 13 B2 INPUT/OUTPUT1 14 INPUT/OOUPUT 2

3 INPUT 3 15 INPUT 4

4 INPUT 5 16 INPUT 6

5 INPUT 7 17 INPUT 8

6 INPUT 9 18 INPUT 10

7 INPUT 11 19 INPUT 12

8 INPUT 13 20 ANALOG INPUT 1

9 ANALOG INPUT 2 21 ANALOG INPUT 3

10 ANALOG INPUT 4/ENCODER A 22 ANALOG INPUT 5/ENCODER B

11 CAN H 23 CAN L

12 +5V 24 I/O GND

PIN NO. DESCRIPTION

1 SERIAL Rx/LED ENABLE

2 I/O GND

3 SERIAL Tx/LED OUTPUT

4 +12V