Manual

Configuring the Communications
Controller
Chapter 3
3-9
Table 3.C
SubMenu:
Advanced RS232C Communication Parameters
Parameter Number Parameter Description Factory Default
Number of Retries Number of allowable retries per attempt on the RS232C link:
Valid numbers are 00 (no retries per attempt) to 10 (10 retries per
attempt).
02
DF1 ACK Timeout The time to wait for an acknowledgement (ACK) from the host
computer. The timeout is from 0.1 to 5 seconds in 0.1 second
increments (1-50). To calculate the timeout, multiply the number in the
display by 0.1 second.
For example, a setting of 14 means 14 x 0.1 = 1.4 seconds.
1 second (10)
Flow Control Determines whether modem handshake lines are used for flow control:
Disabled (00), Enabled (01).
Flow control is normally enabled when communicating with a modem.
Disabled (00)
CTS to TX Delay The delay between the Clear to Send (CTS) signal and the start of
transmission (half duplex only). The delay is from 0 seconds to 0.99
seconds in 10 ms (0.01 second) increments (00-99). To calculate the
delay, multiply the number in the display by 0.01 seconds.
For example, a setting of 48 means 48 x 0.01 = 0.48 seconds.
This parameter only takes effect when the Controller is in half duplex
mode and handshaking is enabled. It is only required when
communicating with radio modems that require a delay after exerting
the CTS signal. Refer to your modem manual for this information.
No delay (00)
End of Message to RTS
Off
The delay between the end of a message and the Communications
Controller setting Request to Send (RTS) inactive. The delay is from 0
seconds to 0.99 seconds, in 10 ms (0.01 second) increments (00-99).
To calculate the delay, multiply the number in the display by 0.01
seconds.
For example, a setting of 50 means 50 x 0.01 seconds = 0.50
seconds.
This parameter is only required when communicating with modems
that require a delay between sending the last character and raising the
RTS signal. Refer to your modem manual for this information.
This parameter only takes effect when the Communications Controller
is in HalfDuplex DF1 mode, and handshaking is enabled.
No delay (00).
Duplicate Message
Detection
Determines whether duplicate message detection is enabled: Disabled
(00), Enabled (01).
If enabled, the Communications Controller will acknowledge and
discard duplicate messages.
Enabled (01)