2nd Ave. Coffeemaker DVPDNET-SL DeviceNet Network Scanner User Manual

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DeviceNet Network Scanner DVPDNET-SL
DVP-PLC Operation Manual
26
editing area to 0.
When M1 = On, DVPDNET-SL will send out request message. Write 0004Hex into Class 99 >>
Instance 1 >> Attribue 2 of the target equipment (node address: 02). If the communication of
explicit message is successful, the slave will return with a response message.
When M1 = On, DVPDNET-SL will only send out request message once. If you would like it to
send out request message again, you will have to change ReqID.
When the writing is successfully done, the message responded from the target equipment will be
stored in D6000 ~ D6003.
7 Bit-Strobe Command
7.1 Principle of Bit-Strobe
Bit-strobe is one of the standard I/O transmission methors for DeviceNet. The length of command is fixed to
8 bytes (i.e. 64 bits), and every bit corresponds to a slave.
Corresponding nodes on the network
PLC
device
b15 b14 b13 … b1 b0
D6282 Node 15 Node 14 Node 13 … Node 1 Node 0
D6283 Node 31 Node 30 Node 29 … Node 17 Node 16
D6284 Node 47 Node 46 Node 45 … Node 33 Node 32
D6285 Node 63 Node 62 Node 61 … Node 49 Node 48
When b0 of D6282 = 0, the node 0 equipment will be selected, and it will need to respond with a message to
the master. When b0 and b1 of D6282 = 0, the node 0 and node 1 equipment will be selected, and they will beed
to respond with a message to the master.
b0b1b17 b15 b14b30 b2b18 b16b31
D6283
Node 0
Node 1
Node 2
Node 14
D6282
In the bit-strobe mode, the master will not send control data to the slave node. However, when its
corresponding bit is set to 0, the slave node will have to respond with I/O data to the master. When its
corresponding bit is set to 1, the slave node will not have to respond with I/O data to the master.
8 Display of Node Status on Network
8.1 Display of Node Status in Scan List
DVPDNET-SL does read-time monitoring to the nodes in the scan list and maps the status of every node to a
bit. You can acquire the node status by monitoring D6032 ~ D6035. See the table below for the corresponding
relation between PLC devices and the nodes on the network:

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