DCN4-TB4 Omron

CJ-series CompoNet Master Units CJ1W-CRM21 CSM CJ1W-CRM21 DS E 11 5 NJ/CJ-series CompoNet Master Units Increase the Range of Applicability of Sensors and Actuators. The NJ/CJ-series CompoNet Master Unit manages the CompoNet network, controls communications between the Controller and Slave Units, and handles I/O data and message data. CJ1W-CRM21 Features Setup is simple. Make the master s mode settings and set the baud rate, and you re ready to go. Control up to 2,560 points and 384 nodes with one Master Unit. Intuitive memory mapping with separate areas for Word Slave Units and Bit Slave Units. Seven-segment display helps with startup and enables prompt detection of problems. Collect information from Slave Units using message communications, or use message communications to set parameters. Inherits the ease of use of the CompoBus/S. Flexible I/O allocations with software setting function. System Configuration : Repeater Unit CompoNet Master Unit : Terminating resistance : T-branch Branch Line : Multidrop Slave Units Trunk line Sub-trunk line Terminating Resistance Repeater Unit Branch Line Repeater Unit Terminating Repeater Resistance Sub-trunk line Unit Slave Units Branch Line Branch Line Repeater Unit Sub-trunk line Terminating Branch Resistance Line Terminating Resistance Sub-trunk line Sub-trunk line Terminating Resistance Repeater Unit Branch Line Branch Line Sub-branch line Terminating Resistance Multidrop connection on branch line 1CJ1W-CRM21 Communication Specifications Item Specification Communications protocol CompoNet Network protocol Remote I/O communications (programless, constant sharing of data with Slave Units) and message Types of communications 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 The following media can be used. *3 2 Round cable I (JIS C 3306, 2-conductor 0.75 mm ) 2 Communications media ) Round cable II (JIS C3306 4-conductor 0.75 mm Flat Cable I (DCA4-4F10 Standard Flat Cable) Flat Cable II (DCA5-4F10 Sheathed Flat Cable) Communications distance and Refer to Cable Types, Baud Rates, and Maximum Distances on page 3. wiring Connectable Master Units CompoNet Master Units Connectable Slave Units CompoNet Slave Units Word Slave Units: 1,024 inputs and 1,024 outputs (2,048 I/O points total) Maximum I/O capacity Bit Slave Units: 256 inputs and 256 outputs (512 I/O points total) Word Slave Units: 64 input nodes and 64 output nodes Maximum number of nodes Bit Slave Units: 128 input nodes and 128 output nodes Repeater Units: 64 nodes Word Slave Units: 16 bits Bits allocated per node address Bit Slave Units: 2 bits Maximum number of nodes per trunk 32 nodes (including Repeater Units) line or sub-trunk line Word Slave Units: IN0 to IN63 and OUT0 to OUT63 Applicable node addresses Bit Slave Units: IN0 to IN127 and OUT0 to OUT127 Repeater Units: 0 to 63 Up to 64 Repeater Units can be connected per network. When Repeater Units are connected in series Repeater Unit application conditions from the Master Unit, up to 2 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) Two lines: BS+ and BS (power for communications and internal Slave Unit circuits) Power lines Power is supplied from the Master Unit or Repeater Units. Communications power supply 24 VDC 10% Flat Cable at baud rate of 93.75 kbps: No restrictions Other cables or baud rates: Trunk line and branch lines Connection forms Connections for Slave Units and Repeater Units: T-branch or multidrop connections *1. FINS message communications are supported by CJ-series Controllers only. *2. Drop-line connections are not supported with a baud rate of 4 Mbps, so Slaves with prewired cables (Bit Slaves) cannot be used. *3. Round cable, Flat Cable, and Flat Cable II 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. 2