GE GFK-2489 - Manual (Page 62)

GFK-2489 Chapter 3 AP Management 3-29
3
▪ Baud Rate —This menu item is used to set the data rate (payload) for the COM port in bits
per second. [1,200–115,200; 19200]
▪ Byte Format —This item allows you to set the interface signaling parameters: baud rate
(see Baud Rate above for the allowable range), data bits, parity, and stop bits. [7N1, 7E1,
7O1, 8N1, 8E1, 8O1; 8N1]
▪ Buffer Size —This selection selects the size of the buffer available for passing serial
traffic. The maximum AP buffer size for incoming serial data is 256 bytes. Incoming serial
packets (from the RTU) larger than 256 bytes are split by the AP into 256 byte packets
before being transmitted over the air. The associated remote(s) on receiving these
packets transmits them out of the serial port as separate packets. This parameter does
not affect serial data/packets received by the AP (from remotes) over the air and
transmitted out of the local AP serial port. [16, 32, 64, 128, 256; 64 Bytes]
▪ Inter-Packet Delay — Specifies the number of characters that signify the end of a
message (inter-character time-out). A transceiver receiving data through the serial port
sends an end-of-message signal to the remote end. MODBUS defines a “3.5-character”
parameter. [0–65535; 4]
▪ Commit Changes and Exit Wizard —Implements the settings shown on the screen and
closes the Serial Configuration Wizard.