91
Technical support / COM1, Pin 4: Is this required?
« on: May 18, 2004, 03:59:34 PM »
What are the consequences of leaving COM1, pin 4 unconnected on the T100MD888+?
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92
Technical support / Re:Output state on powerup
« on: May 18, 2004, 07:20:08 AM »
In this case it's output 4.
Hmmm...maybe instead of a rotary power switch I could achieve the same goal with a timed relay. However, either technique will require a different wiring strategy which isn't all that feasible with the current machines I have built.
Hmmm...maybe instead of a rotary power switch I could achieve the same goal with a timed relay. However, either technique will require a different wiring strategy which isn't all that feasible with the current machines I have built.
93
Technical support / Output state on powerup
« on: May 17, 2004, 11:22:47 PM »
Whenever I power up our T100MD888+ PLC some of the outputs get energized which in turn causes whatever actuators are connected to them to suddenly move. In some cases this can be a problem. Is there any way to control this?
94
Technical support / Connecting 2-wire Turck prox.
« on: May 16, 2004, 08:29:09 PM »
I'm trying to connect a 2-wire inductive proximity sensor by Turck (part # Bi1.5-G08M-AD6X-H1341) to our T100MD PLC but I'm having some difficulty. I can see that the input's LED is dimly lit when the prox is off but it then comes on bright when the prox is on. However the PLC software never registers the input as being on.
According to Turck's catalog this sensor has a voltage drop of <= 6.2 V @100 mA when triggered but I'm actually measuring 4.6 V at the input when the sensor is on. Am I cutting it too close to the 0 - 5 V range required for an on condition as quoted in the T100MD installation manual? Can anyone recommend a simple way to lower this voltage so that the PLC will see the input properly?
I guess I'm confused because this is backwards from what I envision as a leakage problem. Usually in the off state the leakage of the sensor triggers the input but this seems to be a different issue.
edit: I dealt with this using a separate relay. Messy but it seems to be the only way.
According to Turck's catalog this sensor has a voltage drop of <= 6.2 V @100 mA when triggered but I'm actually measuring 4.6 V at the input when the sensor is on. Am I cutting it too close to the 0 - 5 V range required for an on condition as quoted in the T100MD installation manual? Can anyone recommend a simple way to lower this voltage so that the PLC will see the input properly?
I guess I'm confused because this is backwards from what I envision as a leakage problem. Usually in the off state the leakage of the sensor triggers the input but this seems to be a different issue.
edit: I dealt with this using a separate relay. Messy but it seems to be the only way.
95
Technical support / Re:Output LEDs partially lit when off
« on: May 16, 2004, 04:05:29 PM »
The diode fixes the "problem" but I guess I don't understand why this would happen when the load and the PLC are connected to the same power supply. But I guess that question is difficult to answer without knowing how the load is designed.
96
Technical support / Re:Stepper motor unable to run above ~13kHz
« on: May 12, 2004, 05:31:03 PM »
I understand. No big deal, really. It's hard to criticize such a versatile piece of hardware.
I actually can just run my motor at quarter or half step rather than eighth if I need more speed. That still leaves us with plenty of resolution for our application (.0002" to .0004" per step).
Thanks for the up front reply.
I actually can just run my motor at quarter or half step rather than eighth if I need more speed. That still leaves us with plenty of resolution for our application (.0002" to .0004" per step).
Thanks for the up front reply.
97
Technical support / Stepper motor unable to run above ~13kHz
« on: May 11, 2004, 10:58:08 PM »
I'm not trying to blame my problems on the T100MD888+. I just figured someone here might have some advice.
I've got an Anaheim 23MD series motor (combined stepper/driver deal) connected to my TriPLC. Whenever I try to drive it with frequencies approaching 13, 14, 15 kHz and higher it won't spin but it does whine like it's spinning.
The motor specs claim the following:
Maximum clock frequency: 500 kHz
Minimum clock pulse width: 1.0 microseconds
I would think this motor would be sufficient to handle whatever the TriPLC can put out for a clock signal.
Maybe my power supply is the problem? I'm using a Sola SDP4-24-100T (24V, 4.2A) to power the motor and the PLC.
Is this not uncommon? What should I be targeting if I want to try to overcome this?
I've got an Anaheim 23MD series motor (combined stepper/driver deal) connected to my TriPLC. Whenever I try to drive it with frequencies approaching 13, 14, 15 kHz and higher it won't spin but it does whine like it's spinning.
The motor specs claim the following:
Maximum clock frequency: 500 kHz
Minimum clock pulse width: 1.0 microseconds
I would think this motor would be sufficient to handle whatever the TriPLC can put out for a clock signal.
Maybe my power supply is the problem? I'm using a Sola SDP4-24-100T (24V, 4.2A) to power the motor and the PLC.
Is this not uncommon? What should I be targeting if I want to try to overcome this?
98
Technical support / Re: Writing Single Digital Output
« on: May 11, 2004, 11:30:55 AM »
How timely 
And it looks like I'm running r47.
Thanks.
And it looks like I'm running r47.Thanks.
99
Technical support / Writing Single Digital Output
« on: May 11, 2004, 05:24:54 AM »
I noticed there is a potential issue with the Write Outputs command "WO" when using Host Communications. If any outputs are supposed to be controlled locally by the PLC then sending a "WO" command can override that control. One example where this is a problem is when using a stepper motor. The direction output gets "confused".
So am I right in determining that the only way to remotely control individual outputs rather than entire banks is to use the MODBUS protocol?
So am I right in determining that the only way to remotely control individual outputs rather than entire banks is to use the MODBUS protocol?
100
Technical support / Re:Linux please
« on: May 09, 2004, 01:45:04 PM »
In case you didn't know Trilogi is only the development software. Once you've designed your application you don't need Trilogi anymore unless you want to debug and/or update. While this means you still need at least one Windows PC at least the final installation won't require one.
Anything with a serial port can communicate with the T100 PLCs. There are several protocols to choose from and if you're so inclined I'm sure you could even develop your own.
Anything with a serial port can communicate with the T100 PLCs. There are several protocols to choose from and if you're so inclined I'm sure you could even develop your own.
101
Technical support / Output LEDs partially lit when off
« on: May 02, 2004, 02:56:38 PM »
I've got an Anaheim Automation 23MD series motor/drive attached to a T100MD1616+ here. I purchased the sinking version (23MD106S-00-00-00) of the Anaheim motor
I connected the direction and clock inputs to outputs 1 and 5, respectively, on the T100 PLC and when I power everything up those two output LEDs on the PLC are "partially" lit even though the outputs are off. I can clearly see that the direction LED toggles between bright and dim as I toggle the output.
Everything seems to work fine but I was wondering if I should be worried about this. Is this normal? What's causing it?
I connected the direction and clock inputs to outputs 1 and 5, respectively, on the T100 PLC and when I power everything up those two output LEDs on the PLC are "partially" lit even though the outputs are off. I can clearly see that the direction LED toggles between bright and dim as I toggle the output.
Everything seems to work fine but I was wondering if I should be worried about this. Is this normal? What's causing it?
102
Frequently Asked Questions / Re:RS232 to USB port adaptor
« on: May 02, 2004, 02:19:21 PM »
I recently used a Radio Shack USB to RS232 adapter cable with no problems (to a T100MD888+).
103
Technical support / Re:can't open under the windows 98
« on: April 20, 2004, 09:27:11 AM »
Can you supply more info?
What specifically are you talking about? TLServer or TRiLOGI?
Are there error messages?
(Also, you don't have to post the same message twice if you want to change the subject line. You could have just used the "Modify" button that's available when viewing your own posts.)
What specifically are you talking about? TLServer or TRiLOGI?
Are there error messages?
(Also, you don't have to post the same message twice if you want to change the subject line. You could have just used the "Modify" button that's available when viewing your own posts.)
104
General Discussions / Re:Question about shielding
« on: April 08, 2004, 11:31:59 AM »
Thanks, I'll look into that.
105
General Discussions / Question about shielding
« on: April 08, 2004, 08:11:17 AM »
Ok, fundamentals here.
1) When using shielded cable you only connect one end of the shield, right?
2) Does the shield connect to the chassis or should it connect to DC ground?
3) If answer to #2 above was chassis then should I expect trouble if AC ground is also connected to the chassis?
1) When using shielded cable you only connect one end of the shield, right?
2) Does the shield connect to the chassis or should it connect to DC ground?
3) If answer to #2 above was chassis then should I expect trouble if AC ground is also connected to the chassis?