Rockwell Automation 1747-KE,D17476.12 DH-485/RS-232C Interface Module - Manual (Page 90)

Publication 1747-UM005B-EN-P - March 2006
8-2 Application Examples
Parameter Settings
For this example, configure the parameters to the settings provided
below.
DF1 Configuration (N10:11...17)
DH-485 Configuration (N10:21...27)
Modem Init String Characters 1-14 (N10:31-37)
c d e f g h i j k l m n o p
Modem Init String Characters 15-28 (N10:41-47)
A B C (null)
Parameter Configuration Word and Bits Used
Communication Rate 1200 N10:11/0...2
Bits Per Character 8 N10:11/3
Parity None N10:11/4...5
Stop Bits 1 N10:11/6
Duplicate Packet Detection Disabled N10:11/7
Checksum BCC N10:11/8
Hardware Handshaking Disabled N10:11/9
Constant Carrier Detect Disabled N10:11/10
Duplex Setting Full N10:11/11
Embedded Response Detect ADER N10:11/12
ENQuiry Retries 2 N10:12/0...7
Modem Init String Delay 5 s N10:12/8...15
NAK Received Retries 4 N10:13/0...7
DF1 Slave Address
(1)
(1) Not applicable for full-duplex.
7 N10:13/8...15
ACK Timeout 37 x 5 ms N10:14/0...15
Message Timeout 100 ms N10:15/0...15
RTS On Delay
(1) 5 x 5 ms N10:16/0...15
RTS Off Delay
(1) 7 x 5 ms N10:17/0...15
Parameter Configuration Word and Bits
Used
Node Address 5 N10:21/0...7
Max Node Address 31 N10:21/8...15
Communication Rate 19,200 N10:22/0...3
Pass Through Enabled N10:22/4
Message Timeout 12000 ms N10:23/0...15