Internet PLC Forum

I have a question about the use of SETSYSTEM 16
I am only using inputs 1 to 32 and outputs 1 to 32 as actual I/O
I am however using outputs 34 to 128 as internal relays that the Master PLC reads with HOSTLINK commands

If is use SETSYSTEM 16,4 will it effect outputs 34 to 128 in any way

I have a question about forcing an IP address into the PLC without having to re boot the PLC
I understand the concept of setting the IP address to 0.0.0.0 to allow the PLC to accept an IP address from the router.
This all works fine so the print #4 command actually places the IP address into H$ example 192.168.0.133 and also sets a relay IP_READY
 
However if the router is not present I want the PLC to accept the address as 192.168.1.15:9080
So inside the program I am using a timer that will turn on after 2 minutes if the IP address does not change from 0.0.0.0
it calls a function that first loads  checks to see if H$ is empty
Then I use DM[800] = 192 DM[801] = 168 DM[802] = 1 DM[803]= 15 AND DM[804] = 908
Then I load that into H$ so far everything works out OK
However even in the manual it says that you need to reboot the PLC
So my actual question is how is it that the router can change the IP address without having to reboot but the program can't. Is there any command I can use that would emulate the signal that the router would send to the PLC to change the IP address?

I have another crazy question for tech support
I noticed that on the new FX series PLC & Smart Tile that dip switch 2 is no longer used.
If this is true then is there any way possible to access the status of dip switch 2 to be able to access it as a user defined setting?
A user dip switch is a great feature to have on any PLC

I have been playing around and have now got the TRiLOGI software into a new Windows 10 tablet
The PLC is plugged into a wireless router
I set up the view protect so that all the custom functions are hidden
However I still have full access to all the other features.
Is there anyway in which to have the software on the tablet as well as the program and make it so that it only has viewing rights and not have the ability to make any changes?
This then would allow me to give the tablet to someone that only needs to monitor the program but not be able to change/print or save to any where.
The final result is that I need the tablet solely for viewing and nothing else

I have a quick question on when you need to use a delimiter in TBasic

I understand that if I want to shorten a section of program such as
IF A>B  THEN
    THEN C=D*5
ELSE
    C=D/5
ENDIF

Can be shortened to IS A>B: C=D*5:ELSE:C=D/5:ENDIF

However if you only have one IF statement and it is used to either SET or Clear I/O is the delimiter needed.
IF SUMCV >= 27
  SETIO SUCT27
ELSE CLRIO SUCT27
  ENDIF

IF SUMCV >= 27 SETIO SUCT27 ELSE CLRIO SUCT27 ENDIF ' Is a delimiter needed in this case

Lorne

I am still a little confused on the proper use of a IF or a THEN statement
Below is an example of what I wanted to accomplish but failed
I only want the FOR  and TESTBIT function to work if DM[535] is greater than 0 and I was trying to avoid using a GOTO statement to bypass it.

CLRIO CBP 'First Clear CBP
   IF DM[535] > 0 THEN
FOR N = 0 TO 7
   IF TESTBIT (DM[541], N)
IF TESTBIT(DM[537],N) =0
   SETIO CBP
ENDIF
      ENDIF
NEXT

I did a search on the Internet for how to reverse bits and was surprised to find out how many times people have asked that question however most answers were for a C or C++
is there a simple way to reverse the bits in either a 8 bit or 16 bit value stored say in DM1 in TBASIC Fx series plc
example dm1 = 11100000 the result should be 00000111

Is there a simple way to reset a large group of relays in TBasic?
The manual describes how to reset single bits 0 to 15
An example would be I need to reset relays 273 through to 310
From what I have learned so far I think it should be something like this.

DO I USE FOR N = 273 TO 310 // 273 to 310 are the individual relays but the channel number would be 35 to 39
OR DO I USE N = 35 TO 39 // // so this is where I am confused
RELAY[35] = 0

Would this be the correct way?