Allen-Bradley 1336-GM5-A DeviceNet Communication Board for 1336 PLUS, PLUS II & FORCE Drives

Allen-Bradley 1336-GM5-A DeviceNet Communication Board for 1336 PLUS, PLUS II & FORCE Drives

The 1336-GM5-A​ is an Allen-Bradley (Rockwell Automation) DeviceNet communication board in the 1336 adjustable-frequency drive option family. It is the embedded, plug-in daughter-card form of the company’s SCANport-to-DeviceNet adapter, designed to be mounted directly inside a compatible 1336-series drive rather than in a separate enclosure. Its sole and precise function is to act as the electronic bridge between a DeviceNet network and the drive’s internal SCANport control bus—converting high-level DeviceNet messages from a PLC scanner into the low-level serial commands the drive’s control processor understands, and packaging drive status, feedback, and fault data for return to the network.

Where the external 1203-GK5 module performs the same protocol conversion from a DIN-rail-mounted housing, the 1336-GM5-A​ installs on stand-offs inside the drive enclosure and plugs into the host’s internal 14-pin SCANport header. This embedded form factor eliminates the external DIN rail, the mounting bracket, the SCANport interconnect cable, and the external housing that the 1203-GK5 requires. In a crowded motor control center, that saves panel space and removes two common failure points—the cable and its connectors—from the communication path. The trade-off is that the board must be compatible with the drive’s frame size and adapter slot; Rockwell’s own documentation notes that lower-horsepower 1336 products may not support an internally mounted board, and 1336 FORCE applications require 30 hp and above with the standard adapter board.

The 1336-GM5-A​ supports the full set of DeviceNet communication modes: polled I/O for deterministic cyclic exchange, change-of-state messaging for bandwidth-efficient event-driven updates, cyclic messaging, and explicit messaging for parameter reads and writes. It is conformance-tested to ODVA DeviceNet specifications. Node address (0–63), baud rate, and datalink assignment are all set by on-board DIP switches—no software, laptop, or EDS file is required for basic configuration. Power is drawn from the DeviceNet network at 12–25 VDC, with a typical current draw of 40 mA. The 1336-GM5-A​ has been discontinued by the manufacturer, so current supply is new-surplus and refurbished stock; it is routinely stocked as a last-time-buy spare by plants extending the life of their 1336 drives.

Allen-Bradley 1336-GM5-A DeviceNet Communication Board for 1336 PLUS, PLUS II & FORCE Drives

 

Technical Specifications

Parameter Name Parameter Value
Product Model 1336-GM5-A
Manufacturer Allen-Bradley (Rockwell Automation)
Product Type DeviceNet Communication Board / Embedded SCANport-to-DeviceNet Adapter
Product Family 1336 Adjustable Frequency Drive Communication Options (Adapter 6, B Frame and up)
Compatible Drives 1336 IMPACT, 1336 PLUS, 1336 PLUS II, 1336 FORCE, 1336 SPIDER
Network Protocol DeviceNet (ODVA conformance-tested)
Device Role DeviceNet slave / adapter
Supported Baud Rates 125 kbps, 250 kbps, 500 kbps (DIP-switch selectable)
Default Baud Rate 125 kbps
Node Address Range 0–63 (DIP switches SW2-1 through SW2-6)
Default Node Address 63
Supply Voltage 12–25 VDC (from DeviceNet network)
Current Consumption 40 mA typical
Internal Interface 14-pin SCANport connector (power + communication)
Network Interface 5-pin removable Phoenix connector (open-style DeviceNet)
Communication Modes Polled I/O, Change-of-State, Cyclic, Explicit Messaging
Datalinks Up to 4 (A–D), enabled by DIP switches SW1-1 through SW1-4
Default I/O 16-bit logic command/status; 16-bit reference/feedback
Status Indicators 2 dual-color LEDs: DeviceNet network status, SCANport status
Configuration All settings via DIP switches; no software required
Mounting Internal board mount on stand-off nylon headers, 4 Phillips screws
Enclosure Rating Determined by host drive enclosure
Operating Temperature 0 °C to 50 °C
Storage Temperature −40 °C to 85 °C
Relative Humidity 0% to 95% RH, non-condensing
ESD Withstand 8 kV contact discharge
Certifications DeviceNet conformance tested; CE
Lifecycle Status Discontinued / obsolete (last-time-buy spare)
Reference Publication 1203-UM010

 

Main Features and Advantages

Embedded form factor eliminates external hardware

The 1336-GM5-A​ mounts directly inside the drive on stand-off nylon headers and plugs into the internal 14-pin SCANport connector. There is no DIN rail to allocate, no mounting bracket to install, and no SCANport patch cable to route or maintain. In a crowded motor control center this saves real panel space, and it removes the external cable and its connectors—two of the most common points of failure in communication installations. For a plant standardizing on networked drives, the reduction in wiring, conduit, and terminal-block hardware across dozens of drives is substantial.

Configuration without software

Every essential setting on the 1336-GM5-A​ is a DIP switch. Node address, data rate, and datalink assignment can all be set on a bench before the board is installed in the drive. A spare can therefore be pre-configured to an exact node number and dropped in as a replacement in minutes, without requiring a laptop running RSNetWorx at the panel. This is a material advantage during an outage, when the priority is to restore the drive rather than to commission a network device.

Network diagnostics at a glance

The 1336-GM5-A​ carries two independent dual-color LEDs: one for DeviceNet network status and one for SCANport status. The separation is genuinely useful during commissioning and fault-finding. A network-side problem—duplicate node address, missing bus terminator, or bus-off condition—shows differently from a drive-side problem such as an unsupported datalink. This immediate visual distinction prevents the common mistake of blaming the network for a drive configuration issue, and vice versa.

Flexible I/O over a single drop

The 1336-GM5-A​ supports polled I/O for deterministic cyclic exchange, change-of-state messaging for event-driven, bandwidth-efficient updates, and explicit messaging for reading and writing drive parameters. Control commands, speed and torque references, acceleration and deceleration rates, status, output current, motor speed, DC bus voltage, and fault codes all travel across one DeviceNet drop. This removes the need for the extensive point-to-point wiring that would otherwise be required: separate wires for start, stop, forward, reverse, and fault reset, plus analog wiring for speed reference and feedback. The four configurable datalinks add two input and two output words each, allowing additional process values to be carried without consuming scanner I/O.

Bus-off node recovery without board removal

With DIP switches SW2-7 and SW2-8 set to On, the 1336-GM5-A​ supports changing the node address of a device that has gone bus-off using the appropriate software tool. This avoids pulling the board out of a drive merely to correct an address conflict—a small feature, but one that can save a significant amount of downtime when a scanner configuration has been changed remotely.

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