RedLotus

Hi, I was trying to use the Jazz PLC as a mod bus slave and forced the following System integers in my program: SI 141 = #1 SI 142 = #100 SI 143 = #3 SI 144 = #2 SI 145 = #19200 SI 140 = #600 After I loaded my program to the PLC, I modified the program in the U90 Ladder and tried to reload it but it resulted in a communication failure. The comm parameters are perfectly matched and the cable does not seem to be at fault. Is this because of the program? If so is there any way I can delete the program via the keypad? I tried to stop the program using the Info button and tried to re-establish communications but that did not work. Is there any way to revert to Factory Settings? Is this step necessary in this case? I would appreciate it if someone could answer my questions.

Hi, I am using a Jazz JZ-10-11-R10 PLC in my application. I intend to use the serial port to communicate modbus with a modem. The problem is that the modem has a DB9 Female on board and a serial cable (RS-232) DB 9 Male/Female was provided with it in the box. Can I use this configuration to build my cable? Modem side (D type 9-pin Male) PLC side RJ11 Controller Signals DSR(out) 6 <--> 1 PWR(in) RTS(in) 7 <--> 2 GND GND 5 <--> 3 RXD(in) RXD(out) 2 <--> 4 TXD(out) TXD(in) 3 <--> 5 GND GND 5 <--> 6 PWR(in) DCD(out) 1 <--> I would very much appreciate it if someone could answer my question. Thank you very much. Best Regards, JM

Hi, I am trying to develop an application that pulses an output relay at a maximum rate of 120 pulses Per Minute (i.e 2 pulses per second). The pulse rate is proportional to a variable value contained in an MI. While it is possible to pulse the output relay at a rate of 60 Pulses per minute using the SB 3 System bit, I was not able to figure out a way to pulse the relay in a two second interval or a half second interval. I would very much appreciate it if anyone could provide any ideas how to go about this one. Thank you very much. Best Regards, JM

Its interesting. I did observe that it 'blew a hole' to the display jump functionality. I was just wondering if the number of displays which is limited to 60 in the Jazz controller is a hard limit. Is there a way to add a couple of more displays than 60 such as display only a relevant screen set at one time switch off the other irrelevant sets at that time so that the number of displays which are active are only 60 displays at one time? Maybe by keeping those irrelevant screen sets in some obscure memory space? I would like to know if this is possible as I have hit the ceiling of 60 displays and would like to add a few more ones. Thank you very much and have a great day. Best Regards, JM, Rodi Systems, New Mexico.

Dear Emil, Thank you very much. The example proved to be very useful. That was what exactly I was looking for. Best Regards, JM

Dear Joe, Thanks a lot for your quick response. The problem I am facing is that when I have gone through the specs for the Jazz controllers, I realized there is an upper limit in the number of displays (Displays cannot exceed 60). I have exactly 60 displays currently in my program. I would require 41 more displays if I were to create two screens for each data entry screen as I happen to have a lot of user entry screens in my program. I would very much appreciate it if you could suggest me a way to solve this without adding more displays. Thank you and hope you have a great day. Best Regards, JM

Hi, I have a display screen to accept two Integer Variables Inputs from the User via the Touch Screen. I want to use the same screen to display the variables after the user has completed entering the values. The screen ought to be in a way where it normally displays the values (without the cursor blinking) and in case the user hits the enter button gives the user the opportunity to enter new values(cursor should start blinking). I have tried to use SB 39 to do this but did not get the expected results. I would appreciate it if someone could suggest me a solution. This is a JZ10-11-R10 controller. Best Regards, JM