OMRON 3G8F7-CRM21 dimension

last update: April 2, 2018

(Unit: mm)

3G8F7-CRM21 (PCI)

last update: April 2, 2018

OMRON 3G8F7-CRM21 specification

last update: April 2, 2018

Communications Specifications

Item	Specification
Communications protocol	CompoNet Network protocol
Types of communications	Remote I/O communications (programless, constant sharing of data with Slave Units) and message communications (explicit message communications as required with Slave Units and FINS message communications as required with controllers) *1
Baud rate	4 Mbps *2, 3 Mbps, 1.5 Mbps, 93.75 kbps
Modulation	Base-band
Coding	Manchester code
Error control	Manchester code rules, CRC
Communications media *3	The following media can be used. • Round cable I 2-wire 0.75 mm2 • Round cable II 4-wire 0.75 mm2 • Flat Cable I
Communications distance and wiring	Refer to Cable Types, Baud Rates, and Maximum Distances in the Master Unit Operation Manual.
Connectable Master Units	CompoNet Master Units
Connectable Slave Units	CompoNet Slave Units
Maximum I/O capacity	Word Slave Units: 1,024 inputs and 1,024 outputs (2,048 I/O points total) Bit Slave Units: 256 inputs and 256 outputs (512 I/O points total)
Maximum number of nodes	Word Slave Units: 64 input nodes and 64 output nodes Bit Slave Units: 128 input nodes and 128 output nodes Repeater Units: 64 nodes
Bits allocated per node address	Word Slave Units: 16 bits Bit Slave Units: 2 bits
Maximum number of nodes per trunk line or sub- trunk line	32 nodes (Slave Units and Repeater Units)
Applicable node addresses	Word Slave Units: IN0 to IN63 and OUT0 to OUT63 Bit Slave Units: IN0 to IN127 and OUT0 to OUT127 Repeater Units: 0 to 63
Repeater Unit application conditions	Up to 64 Repeater Units can be connected per network (i.e., per Master Unit). Up to 32 Repeater Units can be connected per trunk line or per sub-trunk line. When Repeater Units are connected in series from the Master Unit, up to two extra segment layers can be created (i.e., up to 2 Repeater Units are allowed between a Slave Unit and the Master Unit).
Signal lines	Two lines: BDH (communications data high) and BDL (communications data low)
Power lines	Two lines: BS+ and BS- (power for communications and internal Slave Unit circuits) • Power is supplied from the Master Unit or Repeater Units.
Communications power supply voltage	24 VDC ±10%
Connection forms	Round cable II (4-wire) or Flat cable I at baud rate of 93.75 kbits/s: No restrictions Other cables or baud rates: Trunk line and branch lines
	Connections for Slave Units and Repeater Units: T-branch or multidrop connections

*1 FINS message communications are supported by CJ-series Controllers only.
*2 A baud rate of 4 Mbps is not supported for branch lines and thus cannot be used for Slave Units with Cables (i.e., Bit
      Slave Units).
*3 Round cable I, round cable II and Flat Cable I are all different types of cable. To use more than one type of cable at a
      time, Repeater Units must be used to separate them on trunk lines and sub-trunk lines.

General Specifications

Item	Specifications
	3G8F7-CRM21 (PCI)
Bus specification	PCI bus Rev2.2 5 V
Number of mountable boards	4 pieces
Compatible OS	Microsoft Windows 2000/XP (32 Bit version)/Vista (32 Bit version)/7 (32 Bit version) Other OS can be used, when the shared memory interface is directly accessed.
Weight	90 g max.
Operation voltage	Internal power supply: 5 VDC±5% 3.3 VDC is not used.
Consumption current	Internal power supply: 5 VDC and 1.5 A max Communications power supply: 24 VDC and 80 mA max
Vibration resistance	10 to 57 Hz, Amplitude 0.075 mm, 57 to 150 Hz Acceleration 9.8 m/s2, 80 min in each direction of X, Y and Z (8 min of each sweep time × 10 sweeps = total 80 min)
Shock resistance	147 m/s2, 3 times in each direction of X, Y and Z.
Ambient operating temperature	0 to 55°C
Ambient operating humidity	0% to 80% RH (with no condensation)
Ambient operating atmosphere	No corrosive gas
Storage temperature	-20 to +60°C

Development Environment

• Microsoft Visual C++ (Ver 6.0 to Ver 2008)
• Microsoft Visual Basic (Ver 6.0)
• CodeGear C++Builder (Ver 5 to Ver 2009)

last update: April 2, 2018

OMRON 3G8F7-CRM21 catalog

• Catalog
• Manual

English

Global Edition

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.

*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.

Catalog Name	Catalog Number [size]	Last Update
CompoNet Catalog	P056-E1-08 [4302KB]	May 07, 201820180507	CompoNet Catalog

OMRON 3G8F7-CRM21 lineup

last update: April 2, 2018

Name	Specification	Model
CompoNet Master Board for PCI Bus	PCI bus Rev2.2 5V	3G8F7-CRM21

last update: April 2, 2018

• NO. 3G8F7-CRM21
• TYPE:Networks CompoNet Masters
• DATE:2021-06-13
• Associated products:
  CompoNet Open Network for High-Speed Control/Features GQ-CRM21 CompoNet Gateway Unit for CC-Link/Features