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Specifications Section 1-3
Default settings • Scan list: Not supported
• Master communications: Supported
• Slave communications: Disabled
• Remote I/O communications: Start
• Master fixed allocations: Fixed Allocation Area Setting 1
• Slave fixed allocations: Fixed Allocation Area Setting 1
Data stored in non-volatile memory (EEPROM) in the
DeviceNet Unit
Saves the following data settings (same as the backup file on the
Memory Card).
• Master scan list
• Slave scan list
• Message monitoring timer list (monitoring time for explicit mes-
sage responses)
• Communications time settings
• Master/Slave enabled
Applicable connections • The DeviceNet Unit automatically selects the applicable con-
nection.
• The user can also specify poll, bit-strobe, COS (change of
state) or cyclic for the applicable connection of each slave us-
ing the Configurator. Up to two types of connections can be set
for each Slave (although COS and cyclic cannot be specified si-
multaneously).
Communications cycle time Uses values calculated using the following equations to derive
default value.
Example: 16 Input Slaves (16 points each), 16 Output Slaves
(16 points each), and a baud rate of 500 Kbps: 9.3 ms
The user can set a value within a range from 2 to 500 ms. How-
ever, the calculated value is only enabled when the calculated
value from the conditions equation is greater than the setting.
Note Uses the default value calculated using 1 input word and
1 output word even for missing nodes when the scan list
is disabled.
Message
communica-
tions
Max. No. of nodes for message commu-
nications per DeviceNet Unit
FINS message com-
munications (Node
address 0 cannot be
used in FINS commu-
nicatins.)
62 nodes Note FINS message com-
munications using
SEND/RECV are
not supported on
PCs to which a
C200H DeviceNet
Master Unit or a
CVM1/CV
DeviceNet Master
Unit is mounted.
Explicit message
are supported how-
ever.
Send explicit mes-
sages
63 nodes
Execution commands FINS commands to
send/receive data
SEND/RECV instructions
Any FINS commands CMND instruction
Sending and receiving FINS commands
connected through a serial line
Executes FINS commands from a host computer to a PC (to
which a CS/CJ-series DeviceNet Unit is mounted) on DeviceNet
through Host Link connections. A PC can also send unsolicited
FINS commands over DeviceNet to a host computer connected
through Host Link.
Inter–network communica-
tions
Same type
of network
Allows transmission across the same type of networks between
DeviceNet networks when multiple Units are mounted (can cross
up to three levels).
Different
type of net-
work
Allows transmission across different types of networks between
DeviceNet and other networks (e.g., Controller Link, SYSMAC
LINK and Ethernet) (can cross up to three levels).
Item Specifications