AB SST-ESR2-CPX-P Serial Communication Module
$123.00
$320.00
Description
AB SST-ESR2-CPX-P Serial Communication Module
Configured for serial data exchange in an Allen-Bradley ControlLogix chassis, the AB SST-ESR2-CPX-P (SST-ESR2-CPX-P Serial Communication Module) provides two configurable serial interfaces for Modbus and custom protocols.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | SST-ESR2-CPX-P |
| Brand | AB / Molex Woodhead SST |
| Product Type | In-Chassis Serial Communication Module |
| Compatible Platform | Allen-Bradley ControlLogix 1756 chassis |
| Communication Ports | 2 x serial ports |
| Serial Interfaces | RS-232 / RS-422 / RS-485 |
| Supported Protocols | Modbus RTU, Modbus ASCII, Serial ASCII, custom serial protocols |
| Operating Mode | Modbus Master / Slave |
| Maximum Baud Rate | 115.2 kbps |
| Port-to-Backplane Isolation | 500 VDC optical isolation |
| Backplane Current Load | 500 mA at 5 VDC; 5 mA at 24 VDC |
| Status Indicators | Module status, TX/RX activity, network status |
| Operating Temp | 0 deg C to 60 deg C |
| Storage Temp | -40 deg C to 85 deg C |
| Relative Humidity | 5% to 95%, non-condensing |
| Weight | 0.40 lb |
| Power Consumption | Backplane load: 500 mA at 5 VDC; 5 mA at 24 VDC |
| Mounting | ControlLogix chassis, in-chassis installation |
Serial Interface and Backplane Communication
The SST-ESR2-CPX-P provides two serial ports configurable for RS-232, RS-422, or RS-485 operation.
Each port supports selectable baud rates up to 115.2 kbps for external serial device communication.
Modbus RTU and Modbus ASCII operation supports Master or Slave configurations according to application requirements.
Serial ASCII and custom serial protocols provide additional communication options for third-party equipment.
The module uses ControlLogix backplane communication to exchange data with the chassis processor.
The stated backplane load is 500 mA at 5 VDC and 5 mA at 24 VDC.
Frequently Asked Questions (FAQ)
Q: Can the two serial ports use different electrical interface modes?
A: The supplied data identifies RS-232, RS-422, and RS-485 as selectable interface modes, but does not specify port-specific configuration restrictions.
Q: What electrical isolation is provided by the module?
A: The supplied specification identifies 500 VDC optical isolation between the serial ports and the ControlLogix backplane.
Q: What serial communication speed is supported?
A: Each serial port supports selectable baud rates up to 115.2 kbps.
Field Installation Guidelines
Install the module only in a compatible ControlLogix 1756 chassis with the chassis power removed during insertion or removal unless the system design explicitly permits energized servicing.
Verify the selected RS-232, RS-422, or RS-485 interface configuration before connecting field wiring to each serial port.
Route serial communication cables separately from high-voltage conductors, motor cables, and high-current switching circuits to reduce electromagnetic interference.
For RS-485 and RS-422 networks, follow the applicable differential-pair wiring and termination practices specified by the connected device network.
Connect cable shields according to the plant grounding architecture and equipment manufacturer's requirements. Avoid creating unintended shield current paths between separately grounded cabinets.
Confirm that the total chassis power budget accommodates the module's specified backplane current load before installation.
After installation, verify module status and TX/RX indicators before commissioning protocol communication with the connected serial devices.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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