USER MANUAL APS 6.0

Configuring Y our Programming Device for Online Communication
11–19
Function Key Description
[F1] ACK Timeout
Contains a userspecified value to count down the amount of
time the sender will wait per command attempt for an
acknowledgement before sending a ENQ command to the
KF3/KE. Valid multipliers are 2-65,535. The default selection
is 18.
[F2] NAK Retries
Indicates the number of times the sender is not willing to be
acknowledged by the receiver before some sort of error
recovery takes place. Valid entries are 0-255. The default
selection is 3.
[F3] ENQ Retries
Indicates the number of times the sender will request
retransmission of a response from the receiver. Valid entires
are 0-255. The default selection is 3.
[F5] Command Reply Timeout
Contains a userspecified value multiplied by 55 ms to count
down the amount of time the sender will wait for a reply after
the command has been acknowledged. Valid multipliers are
18-25,000. The default selection is 198.
[F9] Save to File
Allows you to save the established parameters to a user
configuration file that APS accesses to automatically set up
these parameters the next time you use the software.
DF1 Full-Duplex Device Configuration (SLC 5/03 and SLC 5/04 Processors)
The SLC 5/03 and SLC 5/04 processors support DF1 full-duplex protocol via the
RS-232 connection (channel 0 for both processors) to a host computer. Refer to the
Instruction Set Refer ence Manual for more information on full-duplex protocol.
Note The
SLC 5/04 OS401 pr ocessor also supports bridging fr om DH+ to DF1
full-duplex and from DF1 full-duplex to DH+. For mor
e information, see the
section Inter
change DH+ Bridged, beginning on page 11–33.
Use a 1747-CP3 cable or a modem to connect the RS-232 channel. Refer to the SLC
500 Modular Har dware Style Installation and Operation Manual, Publication
1747-6.2 for more information on cabling.