Cypress CY3274, Руководство пользователя

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CY3274 Cypress High Voltage Programmable PLC Development Kit Guide, Doc. # 001-53598 Rev. *G 29
Kit Operation and PLC Control Panel GUI
Let us refer to the two GUIs as GUI A and GUI B for further discussion. If using one USB-I
2
C bridge,
complete the Write Message step first, then move the USB-I2C bridge to the other node and read
the received message.
In GUI A, under the Messaging tab, set:
■
Source Address Type and Destination Address Type - Logical
■
Destination Address - Logical address of the node that will receive the message
■
Service Type - ACK
■
Retry Count - 1
■
Message Type - Normal
■
Payload Length - Choose a value between 1 and 31. The Payload option automatically config-
ures for the chosen size.
■
Payload - Enter the data to be sent here. Note that only hexadecimal values are allowed.
■
Click on Write Message. The Message Status window should show “Sending Successful”. If it
shows “BIU Timeout”, go to the Local Node tab and increase the BIU Threshold Value, then retry
this step. If it shows “No ACK Received”, first make sure that the receiving node is configured
correctly and that the Destination Address matches the address of the remote node. If it still does
not work, go to the Local Node tab and change the value of RX Gain. In higher noise
environments, a higher RX Gain threshold value is better.
Figure 3-8. Messaging Tab