MANISH VORA
Member
Hi, PLC experts, I have a application to develop in which I am to read and write values from a DELTA PLC from my PC which is connected through RS232 ( Comport 1 )l, I have some details of PLC configuration like how to configure Comport 9600,7,E,1
Now, I want to read some value stored in PLC's Data Register like D440 ( memory address ) and want to update it ( write new value in it )
I am using VFP / VB for my frontent development tool.
Pl. guide me... if anyone has any idea about it..
How to send input to PCL ( in binary / HexDecimal / Ascii ) format ?
I have got information from PLCS.net, like
to pass ":" - start string
"01" - slave address
"01" - Command option
"05" -
"14" - Memory Address (starting memory location)
"02" -
"A8" - Memory Address (ending memory location)
"DA" - LRC Check
"CR" - Cerrage Return
"LF?" - Line Feed for ending string
I have tried with above string in Hex format and ascii format, but didn't get any reply ( indication on plc ) from plc.
Pl. Help me as earliest... It is matter of my New Job....Thanks
Now, I want to read some value stored in PLC's Data Register like D440 ( memory address ) and want to update it ( write new value in it )
I am using VFP / VB for my frontent development tool.
Pl. guide me... if anyone has any idea about it..
How to send input to PCL ( in binary / HexDecimal / Ascii ) format ?
I have got information from PLCS.net, like
to pass ":" - start string
"01" - slave address
"01" - Command option
"05" -
"14" - Memory Address (starting memory location)
"02" -
"A8" - Memory Address (ending memory location)
"DA" - LRC Check
"CR" - Cerrage Return
"LF?" - Line Feed for ending string
I have tried with above string in Hex format and ascii format, but didn't get any reply ( indication on plc ) from plc.
Pl. Help me as earliest... It is matter of my New Job....Thanks