Rockwell Automation 1761-NET-AIC Advanced Interface Converter (AIC+) User Manual - Manual (Page 39)

Publication 1761-UM004B-EN-P - June 2006
Specifications and Dimensions 35
Auto Transmit Delay (turnaround time) per Communication Rate
Auto-transmit Delay for AIC+ Interface Converter Using Auto-transmit Detection
(no hardware handshaking)
Auto Transmit Delay is measured from the time the AIC+ interface
converter transmits its last mark out of the RS-485 port, until the delay
time expires. The AIC+ interface converter will not accept RS-485 port
data during the Auto Transmit Delay time.
Communication
Rate (Kbps) Min Delay
(ms) Max Delay
(ms) Typical Delay
(ms) Pre-send
Transmit Delay
Setting (ms)
(1)
(1) The pre-send transmit delay setting is used in your device’s (for example, SLC and MicroLogix controller)
communications configuration.
600 7.3 15.0 10.8 16
1200 7.3 15.0 10.8 16
2400 5.5 11.2 8.1 12
4800 2.7 5.7 4.0 6
9600 1.3 2.8 2.0 3
14400 0.9 1.9 1.4 2
19200 0.6 1.4 1.0 2
AUTO 0.3 0.7 0.5 (2)
(2)
Use a pre-send value, depending upon the network communication rate being used.
RS-485 Communication
Port (Phoenix Plug)
Network Device
Packet From
Network Device
Auto Transmit Delay
(turnaround time)
Packet to
Network Device