Internet PLC Forum

i am using E10 npn plc.

I am not getting able to download program. Using trilogy 3.5 softwar.
PLC id is not detected.
i am using straight connection cable for program transfer.
Getting message window "No Response From PLC"

I have already checked following things :
1)Using 9 pin D sub connector cable with straight connection
2) cable continuity for all pins (1 to is ok. Pin 9 is not
    showing continuity.
3)Serial port setting standard (baud rate 9600, data bits 8,  
   stop bit 1, parity none etc)
4) PLC is getting power ON and previous program lodaded in
    plc (2 days ago) is working fine. Hence all IOs are
    functioning OK.

i am using t100 md 1616 controller for my system.


i have connected bar code scanner to serial port com1 and read the bar code data

through that port and operate some i/o logic depending on bar code i receive.
plc id is 01.

now,i connect a pc to com3 i.e 485 communication port.
i want to read the status of controller IO on PC .
i am using auto turn around type rs 232-485 converter to connect pc to 485 port of controller.cable used is 2 core shielded cable. cable length between pc and plc is 40 meters.


but i can execute only "IR*" command & for any other command i get message "No response from plc"
i tried with RI command in following format
  "RI01*" it does not work.
i tried with another format
  "@01RI0100*" but this is also not working.
no other command is working through 485 port other than IR*
communication baud rate set is 38400.
also, when i start TL server + TRilogi software and click on "Detect ID" button

in Controller -> select controller menu, then it detects the id properly as 01, but when i click on connect, it fails.


Since it is executing IR* command and shows plc id, i think converter unit should be ok.

we r using E10 PLC for a small application.

our user needs to monitor the status of all IOs, on PC, and change a timer value in program written in the controller frequently through PC.

We have provided a PC with VB software. Distance between PC and plc is 30 meters.

Hence we r trying to connct PC serial port to 485 port of controller through auto 485. But, we did not get any response from plc when we execute host link commands.

We have tried with 2 baud rates 9600 and 38400 but it did not work.

We also tried using trilogy 3.5 and with VB sample software provided.

But, it works if we use a programing cable with PC serial port.

Is it possible to do 1 to 1 communication (PC and plc) on 485 port for E10?

i have got T100MD 2424 PLC which is having EPROM manager.
String EPROM buffer add is shown as 1-87
i.e i can store max 87 strings in string EEPROM buffer.

how much maximum string memory can be available in M series PLCs.
can we have a plc with memory more than 87 strings.
how much would be maximum memory available?

i have an application in which we need to store 1428 strings each of 12 byte.
is it possible in M series plc?
if not max. how much strings we would be able to store?
 

we have a requirement to compare the codes from 2 different bar code scanners and generate digital high or low outputs according to code comparison.
both the bar code scanners are of RS 232 output type.
we tried to use T100MD 88 plc for this application.
one bar code scanner connected to rs232 port (port1) and another to rs485 port(port3) through 232 to 485 converter.
but we are not getting able to get the bar code data on port3.
for trials, we connect the bar code scaner to port3 ie rs485 port through 232 to 485 converter (2 wire auto type) and we tried to monitor the input contents by connecting trilogy software through port1.
but we did not get the data in register.
is it possible to use rs485 port to read the data from external device such as bar code scanner ?
data is in ascii format and boud rate, protocol settings were made as per required for system.

this is very urgent since we are on site for this work.

i have a E10+ PLC.
i have a temperature controller which is having rs 232 port and sends temperature data out on this port.
i want to read  data from my temp. controller on RS 232 port of PLC (data length 52 bytes) and forward it through rs 485 port of PLC.
also i want to compare the temparature value with set value.
if 'ok' then one output should high (which is connected with green indicator) and if NotOk then another o/p should be high (which is connected with red indicator).
it needs only 2 outputs, 1 rs 232 port and 1 485 port.
how it could be done with E10+ PLC ? ( to read the data string on 232 port and out it in free dump mode to rs 485 port of plc.)