Phoenix Contact 2702772, Руководство пользователя

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GW EIP/ASCII...
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PHOENIX CONTACT 3785_en_B
–
Disconnect: This field determines how the GW EIP/ASCII... disconnects from the
device. Select Never to maintain the connection when there is no data. Select Idle to
close the connection after a period of inactivity specified by the Idle timeout field.
– Idle timeout: The Idle Timeout is the number of seconds before a disconnect occurs if
the Disconnect Idle option is selected.
– RX timeout between packets: Receive timeout between packets in ms. This is the
maximum spacing between received bytes allowed before the received message is
expected to be complete. The range is 0 to 65565 ms.
2. Click the “Apply Changes” button to save the configuration.
The fields may be edited at any time, be sure to click the “Apply Changes” button to
save the modifications.
The GW EIP/ASCII... modules can be configured to detect serial packet delimiters used for
the identification of a raw data packet.
Raw/ASCII serial packet delimiters
“Detect Delimiters from Serial Device”:
Start Transmission (STX): When enabled, GW EIP/ASCII... detects an STX (start of
transmission) byte sequence which is configured as one byte or two bytes when it
receives a serial packet. If none is selected, the GW EIP/ASCII... accepts the first byte
received after the last End Transmission (ETX) byte(s) as the start of the next data packet.
If one byte is selected, the GW EIP/ASCII... starts to collect data when the STX byte is
detected. If the first byte is not the STX byte, it discards the byte. The GW EIP/ASCII...
continues to discard the bytes until it finds an STX byte. If two bytes is selected, the
GW EIP/ASCII... starts to collect data when both of the STX bytes are detected. If the STX
bytes cannot be found, it discards the bytes. The GW EIP/ASCII... continues to discard the
bytes until it finds the two STX bytes.
– Byte 1: Specifies the character that represents the first STX byte. The GW EIP/ASCII...
looks for this character in the first STX byte, if the length is one byte or two bytes.
Specify a value between 0 and FF in hexadecimal format.
– Byte 2: Specifies the character that represents the second STX byte. The
GW EIP/ASCII... looks for this character in the second STX byte, only if the length is two
bytes. Specify a value between 0 and FF in decimal format.
End Transmission (ETX): When enabled, the GW EIP/ASCII... detects an ETX (end of
transmission) byte sequence that is configured as one byte or two bytes marking the end
of the serial packet. The length indicates the number of ETX bytes; if none is selected, this
function is disabled and the GW EIP/ASCII... uses the Rx Timeout Between Packets to
indicate the end of data packet. If one byte is selected, the serial data is checked for one
ETX byte to identify the end of a serial packet. If two bytes is selected, the serial data is
checked for two ETX bytes to identify the end of a serial packet.
– Byte 1: Specifies the character that represents the first ETX byte. The GW EIP/ASCII...
looks for this character in the first ETX byte, if the length is one byte or two bytes.
Specify a value between 0 and FF in hexadecimal format.
– Byte 2: Specifies the character that represents the second ETX byte. The
GW EIP/ASCII... looks for this character in the second ETX byte, only if the length is two
bytes. Specify a value between 0 and FF in decimal format.
Strip Rx STX/ETX Characters: When enabled, the STX and ETX characters are removed
from the received serial packets. Packets sent from the PLC by way of Ethernet to the serial
ports of the GW EIP/ASCII... are not checked for STX/ETX characters.
The GW EIP/ASCII... modules can also be configured to append characters to the
beginning or end of a serial packet.