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$820.00 (USA and Canada only)

Availability: Call for Availability
groov 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.

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.

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. 

groov serial modules are directly connected to the processor via the bus on the chassis, so each serial port works like a port that’s built into the processor. groov serial modules contain two to four ports, and serial modules can be placed in any of the first four positions on the chassis; so depending on the serial modules you use, you can add up to 8 to 16 serial ports to your GRV-EPIC-PR1.

Note that this direct connection means that an EPIC processor can control serial modules on its own chassis, but it cannot control serial modules on a separate EPIC chassis. Other devices, such as a SNAP PAC controller, also cannot control serial modules on an EPIC chassis.

Note: This module requires groov EPIC Firmware 1.2.0 or higher 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)a; CE, ATEX (Category 3, Zone 2), RoHS; DFARS; CB Scheme; UKCA
Warranty 30 months
a For use in hazardous locations, equipment must be mounted in an enclosure that meets the requirements of the National Electrical Code, ANSI/NFPA 70, and ANSI/ISA-61010-1 (82.02.01).

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, part numbers GRV-CSERI-4 and GRV-CCANI-2 (CAN bus).

groov I/O Modules Firmware Release Notes

This document lists the latest updates to the firmware for groov I/O modules. It includes information on new features, enhancements, and bug fixes.

List of groov I/O module firmware download pages

Note: This document was formerly called a readme. The name was changed to more accurately describe its content.

UKCA Declaration of Conformity (groov EPIC and groov RIO)

This document is the Manufacturer's Declaration of Conformity for the products listed herein, in accordance with the rules, regulations and standards of the United Kingdom. The models cited have been tested to the essential requirements listed in the Standards section, and fully comply with the legislation as listed in UK Legislation section.

ATEX Letter of Conformity for groov EPIC

This ATEX Letter of Conformity is provided to support CE Declaration of Conformity (groov EPIC and groov RIO), form 2261.

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 (groov EPIC and groov RIO)

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 Release Notes.

You can download the previous version of the firmware by clicking on this link: 1.6e1.6b

CAD Drawings: groov EPIC and groov RIO I/O wiring

This ZIP file contains I/O wiring diagrams for groov EPIC I/O modules and groov RIO models, in DWG format.

No videos or demos are available for this product.