Rockwell Automation 1746-BAS BASIC LANGUAGE - Manual (Page 147)

Publication 1746-RM001A-US-P
Status Functions 11-17
The second input argument specifies the Poll Time-out period when in
half-duplex mode or the ACKnowledge Time-out period when in full-duplex
mode. Poll Timeout specifies in 5 ms increments how long to wait before being
polled by the DF1 master, before a transmission request is ignored. PUSHing 0
indicates no Poll Time-out period. ACKnowledge Timeout specifies in 5 ms
increments how long to wait for an ACK/NAK before transmitting an
ENQuiry. The valid range for the ACKnowledge Timeout is 2 to 65535.
The third input argument specifies the number of message retries when in
half-duplex mode or the number of ENQuiry Retries to perform when in
full-duplex mode. Message retries specifies the number of message transmission
retry attempts made before giving up and flagging the transmission as failed.
PUSHing 0 indicates only the initial attempt is made and if not acknowledged
by the master the attempt is flagged as failed. ENQuiry Retries specifies the
number of ENQ’s to transmit before a packet transmission is flagged as failed.
The valid range for both is 0 to 254.
The fourth input argument specifies the RTS On Delay time period when in
half-duplex mode or the number of NAK Received Retries to perform when in
full-duplex mode. RTS On Delay specifies in 5 ms increments the delay
between when a Request-To-Send (RTS) is activated and a transmission is
initiated. Only used if HDMwCC or HDMwoCC is selected through the first
input argument. The valid range for the RTS On Delay is 0 to 65535. NAK
Received Retries specifies the number of packet retries to transmit due to
receiving NAK responses. The valid range for NAK Received Retries is 0 to
254.
The fifth input argument specifies the RTS Off Delay time period. RTS Off
Delay specifies in 5 ms increments the delay between when a transmission is
completed and a Request-To-Send (RTS) is deactivated. The valid range for
the RTS Off Delay is 0 to 65499. This argument is only used if HDMwCC or
HDMwoCC is selected through the first input argument. This input
argument is only used for half-duplex mode. When full-duplex mode is
selected a NULL value must be PUSHed.
The sixth input argument specifies the module address that the DF1 driver
responds to when receiving enquires from a remote DF1 device. Legal values
are 0 to 254. This input argument is used for half-duplex and full-duplex
mode.