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16
Specifications and Configurations
Section 1-2
1-2-3
Communications Specifications
Optical Ring System (Joint Ring/Daisy Chain Connections)
Note
1. The maximum distance between nodes depends on the connector and ca-
ble processing methods.
2. With the token-bus method, the maximum number of nodes in an Optical
Bus System with optical bus nodes (i.e., model numbers ending in CLK11)
is 32 (node addresses 1 to 32).
3. The maximum number of words in an Optical System with optical bus
nodes (i.e., model numbers ending in CLK11) is 32,000 words.
Items
Specifications
Type
Optical ring, H-PCF cable
Optical ring, GI cable
Model
3G8F7-CLK13-E
3G8F7-CLK12-EV1
3G8F7-CLK53-E
3G8F7-CLK52-EV1
Communications method
N:N token-ring method (Token Ring Mode)
N:N token-bus method (token-bus mode)
Code Manchester
code
Modulation Baseband
code
Synchronization Flag
synchronization (conforms to HDLC frames)
Transmission path format
Ring method (Token Ring Mode)
Daisy-chain method (token-bus mode)
Transmission speed
2 Mbps
Maximum transmission dis-
tance
20 km
30 km
Maximum distance
between nodes
Crimp cut: 800 m
Adhesive: 1 km (See note 1.)
62.5/125
μ
m: 2 km
50/125
μ
m: 1 km
Medium
H-PCF cable (optical two-core cable)
GI cable (optical two-core cable, 62.5/
125
μ
m or 50/125
μ
m)
Node connection method
Connected via a special (full-lock connector)
connector. (A half-lock connector can also be
used.)
Connected via ST connectors.
Maximum number of nodes 62 nodes (See notes 2 and 3.)
Communications functions
Data links and message service
Number of data link words
Transmission area per node:
3G8F7-CLK13-E and 3G8F7-CLK53-E: 4,000 words max.
3G8F7-CLK12-EV1 and 3G8F7-CLK52-EV1: 1,000 words max.
Number of data link words that can be used in one network (total transmission):
62,000 words max. (See note 3.)
Data link areas
FinsGateway Event Memory
Message length
2,012 bytes max. (including the header)
RAS functions
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
Node bypass function
Transmission path duplication (For ring method in Token Ring Mode only.)
Disconnect detection and notification (Token Ring Mode only.)
Node connection configuration data reading (For ring method in Token Ring Mode only.)
Error control
Manchester code check
CRC check (CCITT X
16
+ X
12
+ X
5
+ 1)
Summary of Contents for SYSMAC 3G8F7-CLK12-EV1
Page 2: ......
Page 4: ...iv ...
Page 20: ...xx Conformance to EC Directives 6 ...
Page 48: ...28 Applications Precautions Section 1 4 Example CX Programmer Response Timeout Setting ...
Page 68: ...48 Backup Power Supply Wiring Optical Ring Systems Only Section 2 4 ...
Page 74: ...54 Using the C Library Section 3 2 ...
Page 110: ...90 Changing the Data Link Tables with Active Data Links Section 5 5 ...
Page 187: ......