Omron NSJ CONTROLLERS - 03-2008 Operation Manual page 91

Specifications
Wired Controller Link Communications Specifications
Items
Communications method
Code
Modulation
Synchronization
Transmission path form
Baud rate and maximum
transmission distance
Media
Node connection method
Maximum number of nodes 32 or 62 nodes (See note 2.)
Communications functions
Number of data link words
Data link areas
Message length
RAS functions
Note
60
N:N token bus
Manchester code
Baseband code
Flag synchronization (conforms to HDLC frames)
Multi-drop bus
The maximum transmission distance varies with the baud rate as follows:
2 Mbps: 500 m
1 Mbps: 800 m
500 Kbps: 1 km
Specified shielded twisted-pair cable
Number of signal lines: 2, shield line: 1
NSJ Controller Link Unit: Connected via a special connector (included)
PLC: Connected to a terminal block
IBM PC/AT or compatible: Connected via a special connector (included)
Data links and message service
Transmission area per node: 1,000 words max.
Data link area (send/receive words) per node
NSJ Controller: 20,000 words
CS/CJ Series: 20,000 words max. (unit Ver. 1.2 or later)
12,000 words max. (pre-Ver. 1.2)
C200HX/HG/HE, CVM1/CV, CQM1H: 8,000 words max.
Personal computer: 32,000 or 62,000 words max. (See note 2.)
Bit-access areas (IR, AR, LR, CIO), DM Area (DM), and extended DM Area (EM)
2,012 bytes max. (including the header)
Polling node backup function
Self-diagnosis function (hardware checking at startup)
Echoback test and broadcast test (using the FINS command)
Watchdog timer
Error log function
(1) At least one Repeater Unit (CS1W-RPT01) is required to construct net-
works that uses a node address higher than 32. The following Controller
Link Units/Support Boards must also be used, and the Wired Network 62
Node Enable Bit of the DM Parameter Area software switch of all nodes
must be turned ON (62 nodes max.).
CS1W-CLK21-V1, CJ1W-CLK21-V1, 3G8F7-CLK21-V1, and
NSJW-CLK21-V1
(2) The limit of 62,000 data link words applies to configurations of 62 nodes.
Refer to the Controller Link Unit Operation Manual (W309) for other specifica-
tions.
Specifications
Section 3-1