Cypress CY3274, Руководство пользователя

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CY3274 Cypress High Voltage Programmable PLC Development Kit Guide, Doc. # 001-53598 Rev. *G 33
Kit Operation and PLC Control Panel GUI
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Enable Transmitter
This field enables the transmitter. If the transmitter on the local PLC node is disabled, the node
does not transmit any data packet but continues to transmit acknowledgement packets.
■
Enable Receiver
This field enables the receiver. If the receiver on the local PLC node is disabled, the node does
not receive any data packet but continues to receive acknowledgement packets.
■
Lock Configuration
This field indicates whether the local node’s configuration may be altered by another node via
remote node configuration commands. If this option is selected, the remote node cannot change
the configuration of the local node.
■
Enable Band In Use
This gives the “Band In Use” function to the local PLC node. When selected and a packet
transmission is initiated, the PLC node first tests the line to see if it is free. The threshold to detect
a band in use condition is set by the BIU Threshold Value field.
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Overwrite at Receiver
If this option is selected, the PLC node’s RX buffer is overwritten whenever a new packet is
received. If this option is not selected, the RX buffer retains the last unread packet until the host
reads the message. The message is read in the Messaging tab by clicking Receive Message or
Enable Auto Reception.
■
Ignore Destination Address
If this option is selected, the local node accepts all messages that are CRC verified irrespective of
the destination address. Otherwise, the receiver only accepts packets addressed to it.
■
Ignore CRC Check
If this option is selected, the node ignores the CRC and accepts all received messages if the
destination address matches its local address.
■
Enable Extended Addressing
If this option is selected, the local node uses the 16-bit extended logical addressing to
communicate on the powerline. A node only communicates with other nodes that use the same
logical addressing mode.
Set Configuration
This button saves the values in the local node fields onto the local PLC node. All fields except the
physical address field can be edited.
For the node to receive and transmit, the following changes must be made:
■
Change the logical address of the node to a value other than 00.
■
Enable the transmitter.
■
Enable the receiver.
■
Enable overwrite at receiver.
Reset Local Node
This button loads the default configuration on to the local PLC node. This preserves the logical
address, group address, PLC Mode, and Noise Threshold register. All the other bits are reset.
Auto BIU Threshold
This button automatically sets BIU threshold and updates the BIU threshold value in the
configuration accordingly.