Automation Direct DL05 User Manual page 304

Word 2 cont'd
DL05/06: V7650
Word 3
Hex value of the V-memory location to temporarily store the ASCII data coming into the PLC.
DL05/06: V7656 Set this parameter to an unused V-memory location which has enough consecutive memory
locations free to store the longest string that will come into the PLC.
To setup port 2 for Non-sequence (ASCII) communications with the following: RTS On-
delay of 10ms, Base timeout x1, RTS Off-delay of 5ms, Odd parity, 1 Stop bit, echo
suppression for RS232-C/RS422, 19,200 baud, 8 data bits, V-memory buffer starting at
V2000 and no flow control you would use the relay ladder logic shown below.
Appendix K: Introduction to Serial Communications
Protocol Mode
01110000 = No flow control
01110001 = Xon/Xoff flow control
01110010 = RTS flow control
01110011 = Xon/Xoff and
RTS flow control
V-memory address for data
SP0
LD
K3012
OUT
V7655
LD
K8670
OUT
V7656
LDA
O2000
OUT
V7650
DL05 Micro PLC User Manual, 6th Edition, Rev. A
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