Phoenix Contact 2702772, User Manual

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Configuration and startup
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the “Transfer mode to PLC” field is selected, this setting specifies the size of the data block
used in the corresponding input assembly instance. The length of the corresponding
instance is equal to (RX data packet size + 4 bytes).
Maximum TX packet size: Specifies the size of the data block used in the corresponding
output assembly instance. The length of the corresponding instance is equal to
TX data packet size + 4 bytes
Oversized packets: Specifies how to process oversized received packets. Set the “Max
packet size” field to the desired size and the packet is truncated. Alternatively, the packet
may be dropped.
RX produced data tag name: Enter the PLC tag or file name in this field. This designates
where to write received data when Write to Tag/File option is selected. This field supports
a name containing up to 40 characters. The “Tag/file” name must be a global variable in the
PLC. Enter the tag/file name exactly as it is in the PLC. A MicroLogix type file name must be
N10 or greater and have the format N10:0.
Advanced configuration
Enable TX sequence number check: If enabled, the sequence number is checked and
messages are only transmitted if the sequence number is incremented from the previous
sequence number. When a duplicate sequence number is received and the “Transfer mode
from PLC” field is set to Write Msg , the message is rejected and the “Duplicate Transmit
Sequence Error Count” counter increments. When a duplicate sequence number is
received and the “Transfer mode from PLC” field is set to Class 1 , the message is ignored.
In either case, if a message is received with an unexpected sequence number that is not a
duplicate or an incremented sequence number, the “Unexpected Transmit Sequence Error
Count” counter increments. If disabled, all transmit messages are transmitted regardless if
the sequence number has been incremented or not.
Disable RX queue (to PLC): Select this option to only receive the last received data
packet. If two or more packets are received during the “Maximum PLC Update Rate” time
period, only the last received data packet is returned.
Receive MicroLogix MSB first: Enable this option when the GW EIP/ASCII... should
receive the most significant byte (MSB) of a 16-bit integer first. This option is disabled by
default and the least significant byte (LSB) is received first.
Transmit MicroLogix MSB first: Enable this option when the GW EIP/ASCII... should
transmit the most significant byte (MSB) of a 16-bit integer first. This option is disabled by
default and the least significant byte (LSB) is transmitted first.
This setting is only used when Class 1 is selected in the “Transfer mode to PLC” field.
The Polling method does not use this attribute.