ASCII Configuration
RSLogix 500 - Copyright Rockwell Software
Driver Select ASCII
Baud: Select a communication speed in bits/second.
ASCII = 1200.
Parity Select Even or None to determine whether the parity bit is used in the communication packets
Termination Characters: Termination 1
Specify the first termination character that you use to indicate the end of an ASCII line received. You can specify a single character or a two-character sequence. When specifying a sequence you must also enter a character in the Termination 2 field (below).
Termination 2 Specify the second termination character of a two-character sequence used to indicate the end of an ASCII line received. Retain the default (\ff) if you only specify a single-character termination character.
Protocol Control
Control Line Select No Handshaking for direct point-to-point communication (without a modem).
Select Full Duplex modem.when you require that RTS always be active and transmission take place when CTS is active.
Select Half Duplex modem when you require partial modem control including RTS and CTS modem control lines.
Delete Mode Select the mode of the “delete” character. The delete mode affects the characters echoed back to the remote device. If Delete Mode is enabled the previous character is removed from the receive buffer.
In CRT mode, when a delete character is encountered the controller echo’s three characters to the device, backspace, space, and backspace. This covers the previous character on the terminal.
In Printer mode, when a delete character is encountered the controller echo’s the slash character, then the deleted character.
Echo Enable or disable character echo. When this mode is enabled all of the characters received are echoed back to the remote device. This allows a user connected to a controller with a terminal to see the characters typed.
XON/XOFF Choose software handshaking. XON and XOFF software handshaking involves the XON and XOFF control characters in the ASCII character set. When the receiver receives the XOFF character, the transmitter stops transmitting until the receiver receives the XON character. If the receiver does not receive an XON character after 60 seconds, the transmitter automatically resumes sending characters. Also when the receive buffer is more than 80% full, an XOFF character is sent to the remote device to pause the transmission. Then when the receive buffer drops to less than 80% full, an XON character is sent to the remote device to resume the transmission.
RTS Off Delay (x20 ms)
Select the delay between when a transmission is ended and RTS is dropped. Choose a value between 0-65535 in 20ms increments.
RTS Send Delay (x20 ms)
Select the delay between when RTS is raised and transmission is initiated. When the transmission is initiated the transmitter must verify the CTS signal is active before it can send characters. If the CTS signal is not active the transmitter waits 1 second for the signal to become active. If the signal does not come active within the second the transmission attempt is failed. This feature is only used if full duplex or half duplex modem control is selected. Choose a value between 0-65535 in 20ms increments.
RSLogix 500 - Copyright Rockwell Software