Phoenix Contact 1020882, Руководство пользователя

Страница: 29 / 52

Configuration and startup
3886_en_A PHOENIX CONTACT
27
–
Connect: If Enable is selected, this setting determines how to connect to a device. If
Never is selected, the
GW PN/ASCII... does not attempt to make a connection. If
Always is selected, the GW PN/ASCII... ma
intains a permanent connection to the
device specified by the “Connect to IP address” and “Connect to port” fields.
–
Connect to IP address: Enter an IP address to which the
GW PN/ASCII...
initiates a
connection. Use the standard AAA.BBB.CCC.DDD format.
–
Connect to port: Enter a TCP Port number to which the GW PN/ASCII... initiates a
connection.
–
Disconnect: This field determines how the GW PN/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 PN/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 PN/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 PN/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 PN/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 PN/ASCII...
continues to discard the bytes until it finds an STX byte. If two bytes is selected, the
GW PN/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 PN/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 PN/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 PN/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 hexadecimal format.
End Transmission (ETX): When enabled, the GW PN/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 PN/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 PN/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.