N-Tron ESERV-M12T, Руководство пользователя

Страница: 23 / 71

Properties ESERV-M12T Modbus Gateway ESERV-M12T Modbus Gateway
18 ESERV-M12T (Rev. 1210)
DESCRIPTION, MODBUS GATEWAY PROPERTIES
The following ESERV-M12T Modbus Gateway properties are ordered alphabetically to assist you in finding the
information you need.
ATTACHED
The Attached is selectable between Master and Slaves. If Master is selected, it will run in TCP server mode, if
Slaves is selected, it will run in TCP client mode.
BAUD RATE
Baud Rate is the communication speed of the link between the Modbus gateway and the device attached to its
serial port. Both these devices must be configured to operate at the same baud rate. Baud rate values range from
75 to 230,400 Baud. (Refer to Appendix B for specific baud rates that are supported.)
CHARACTER TIMEOUT
Character Timeout controls the maximum duration between received characters before sending the characters to
the network. Larger values may decrease the number of network packets, but increase the amount of time to
receive characters. Smaller values may increase the number of network packets, but decrease the amount of time
to receive characters. The range is 1 through 65535.
CONFIGURATION FILES
Configuration files contain all configuration settings for the Modbus gateway. When the Modbus gateway settings
have been configured you can save the settings using The Ethernet Modbus Gateway Manager. Existing
configuration files can be Opened (from the Ethernet Modbus Gateway Manager), which loads them into the
Modbus gateway. This allows the same configuration to be applied to multiple Modbus gateways, or to reload a
previously used configuration.
DATA/PARITY/STOP
The number of Data bits, type of Parity and number of Stop bits selected define the serial port parameters at
which the Modbus gateway will operate. These parameters must be configured to match the parameters set on
the Modbus network connected to the Modbus gateway's serial port.
Data Bits controls the number of bits of data in each character. Options include 5, 6, 7 or 8 data bits.
Parity controls the error checking mode. Options are No Parity, Odd, Even, Mark or Space.
Stop Bits controls the number of bits to indicate the end of a character. Options include 1, 1.5 and 2. (1.5 bits is
only valid when 5 data bits is selected, which is rare. The 2 stop bits setting is only valid when 6, 7 or 8 data bits is
selected.)