Rockwell Automation 9323-S5500D A.I. SERIES MICROLOGIX 1000 AND PLC-500 SOFTW - Manual (Page 391)

Channel Configuration
16-13
Parameters for DF1 Half-Duplex Slave
Parameter Description
Baud Rate Communication speed in bits/second. Toggle baud rates
from 110 to 19200.
Stop Bits Toggle Stop Bits setting to 1, 1.5, or 2.
Duplicate Detect Toggle between Enabled and Disabled. When Enabled, the
processor will detect and ignore duplicate message packets.
Poll Timeout (x 20 ms) Enter a number between 0 and 65535 to set the amount of
time the processor will wait for an acknowledgment of its
message transmission. For a one second timeout, enter the
number 50. (50 x 20ms = 1000ms = 1 second)
Control Line Select No Handshaking for direct point-to-point
communication (without a modem). If you are using a
modem, you have two options. Select Half Duplex with
Continuous Carrier if the master has a full duplex modem
and the slave has a half duplex modem. Select Half Duplex
without Continuous Carrier if the master and slave are both
using half duplex modems.
Parity Toggles between Even and None to determine whether the
parity bit is used in the communication packets.
Station Address Enter the station address. Valid range is 0-254 decimal.
Error Detect Toggles between BCC and CRC for the error detection
mode. CRC, the default, is more complete, but BCC is
faster.
RTS off Delay (x20ms) If you are using a half-duplex communication device, you
may need to delay turning off the RTD (request to send)
signal to make sure the last characters are sent. Valid
range is 0-65535.
RTS send Delay
(x20ms)
If you are using a half-duplex communication device, you
may need to delay sending a message after activating an
RTD (request to send) signal. Valid range is 0-65535.
Pre-send Time Delay
(x1 ms)
If the Control Line is set to No Handshaking or Full Duplex,
this parameter is the amount of time the Master delays its
transmission after having received the last character from a
slave.
If the Control Line is set to Half-Duplex Without Constant
Carrier, then this parameter the amount of time between the
Master receiving the last character from a slave and
asserting RTS prior to transmitting.