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$675.00 (USA and Canada only)

Availability: In stock
serial communication module, 4 channels, RS-232 or RS-485, channel-to-channel isolation

Production Specification

The GRV-CSERI-4 serial communication module provides 4 independent, isolated serial ports for communication with RS-232 or RS-485 serial devices. The module can communicate with RS-485 serial devices in half-duplex (2-wire transmission) or full-duplex (4-wire transmission) mode.

Part of the groov® EPIC system, the GRV-CSERI-4 mounts on any groov EPIC® chassis alongside a GRV-EPIC-PR1 processor and analog and discrete groov I/O modules, to provide the mix of signals you need at any location. 

Each port is selectable between RS-232 and RS-485, with configurable termination and bias in RS-485 mode. Port 0 can also be configured to handle modem commands. Baud rates of up to 1 Mbps are supported.

Note: This module requires groov EPIC Firmware 1.2.0 on your GRV-EPIC-PR1.

Feature Port 0 Port 1 Port 2 Port 3
RS-232 Tx / Rx x x x x
RS-232 RTS / CTS x x x x
RS-232 DCD, DTR, DSR, RI x      
RS-485 half-duplex mode (TxRx+/-) x x x x
RS-485 full-duplex Mode (Tx+/-, Rx+/-) x x x x
RS-485 termination (120 Ohms) x x x x
RS-485 Bias (750 Ohms to +V and COM) x x x x
Specification GRV-CSERI-4
Serial Standards RS-232 (DTE), RS-485 half and full duplex
Baud Rates 300 bps - 1 Mbps
Maximum Cable Length (RS-232) 10 m
Maximum Cable Length (RS-485) 1200 m at 38.4 Kbps, 500 m at 115.2 Kbps, 50 m at 1 Mbps
Bus Loading (RS-485) 1/8 Unit Load
Bus Termination 5 KOhms (RS-232 mode), 120 Ohms (RS-485 mode, selectable)
Bus Bias 750 Ohms, (RS-485 mode only, selectable)
Isolation (field-to-logic) 300 V working, 1500 V transient (1 minute)
Isolation (channel-to-channel) 300 V working
Number of Channels 4 individually configurable channels
Indicators Transmit and Receive LEDs for each channel
Chassis Power Consumption 1.5 W
Chassis Compatibility Slots 0-3 only. The maximum number of modules per chassis is 4.
Minimum GRV-EPIC-PR1 Firmware Version 1.2.0
Wire Size 28–14 AWG
Torque, connector screw 2.5 in-lb (0.28 N-m)
Torque, hold-down screw 3.5 in-lb (0.4 N-m)
Temperature (operating) -20 °C to +70 °C
Temperature (storage) -40 °C to +85 °C
Relative Humidity (non-condensing) 5–95%
Agency Approvals UL/cUL(Class 1 Div. 2); CE, ATEX(Category 3, Zone 2), RoHS; DFARS; CB Scheme
Warranty 30 months

groov Serial Modules Data Sheet

groov® serial modules are part of Opto 22's groov EPIC® system. This document includes descriptions, specifications, and wiring and dimensional diagrams for these modules.

Press Release: groov EPIC Serial Module

Opto 22 releases four-port serial communication module for new groov EPIC SystemGRV-CSERI-4 serial modules expand EPIC system capabilities to add communication with RS-232 and RS-485 serial devices.

Declaration of Conformity (GRV-EPIC)

This document is the Manufacturer's Declaration of Conformity for the products listed herein, in accordance with European, international, and/or national standards and regulations.

GRV-CSERI-4 Module Firmware

This download contains current firmware for the GRV-CSERI-4 module. For a list of bug fixes and enhancements included in this firmware, see the groov I/O Modules Firmware readme document.

You can download the previous version of the firmware by clicking on this link: 1.6b

No videos or demos are available for this product.