Rockwell Automation 1203 Serial Communications Module Series A - Manual (Page 46)

Chapter 5
Configuration and Interfacing
5-10
DF1 Messaging with a 1746-BAS Module Example
(Write 10 Parameters then read 10 parameters)
10 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
20 REM
30 REM This file is a program for the 1746–BAS module.
40 REM
50 REM It performs a PLC2 Unprotected Write (08) followed by
60 REM a PLC2 Unprotected Read (01) over the DF1 link on port #2
70 REM
80 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
90 STOP
100 STRING 0,0
110 STRING 512,127
120 $(1)=”THIS IS A TEST! ”
130 REM
140 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
150 REM Setup port 1 to 9600 baud, no parity, 8 bits, 1 stop bit,
160 REM software handshaking, and battery backed ram data storage.
170 REM !!!!REMEMBER TO SET TERMINAL TO MATCH!!!!
180 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
190 MODE (PRT1,9600,N,8,1,S,R)
200 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
210 REM
220 REM Setup port 2 to 300 baud, no parity, 8 bits, 1 stop bit,
230 REM software handshaking, and battery backed ram data storage.
240 REM
250 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
260 MODE (PRT2,300,N,8,1,S,R)
270 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
280 REM
290 REM Enable DF1 driver
300 REM (20 = Setup for Full Duplex, Auto–Detect Embedded Responses,
310 REM Disable Duplicate Packet Detection, BCC error checking)
320 REM (200 = Wait 1 second for polling by Master)
330 REM (2 = 2 retries)
340 REM (0= No RTS on delay)
350 REM (0 = No RTS off delay)
360 REM (8 = 1746–BAS module address)
370 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
380 PUSH 20
390 PUSH 200
400 PUSH 2
410 PUSH 0
420 PUSH 0
430 PUSH 8
440 CALL 108
450 REM DF1 PLC REMOTE WRITE COMMAND
460 PUSH 2 : REM PLC2 Unprotected Write
470 PUSH 1 : REM Communications Module Node Address
480 PUSH 11 : REM File Number (ignored in this example)
490 PUSH ASC(N) : REM Communications Module File Type
500 PUSH 623 : REM Starting Word in File
510 PUSH 10 : REM Number of Words to Transfer
520 PUSH 50 : REM Command Time–out (x100ms)