Hi all:
I'm using an HD 1020 and need to send on/off commands via serial to a Samsung
PE55C monitor via RS232.
On at 6AM, off at 2AM. When the box is on, it just needs to be playing a simple slide show. Nothing fancy.
I've made a slideshow presentation and set up a schedule for it to run from Midnight to 2am and 6am to midnight. I also made up interactive presentations, each with a single image and embedded Send command, exactly as described in the Serial tutorial video here (Serial String EOL on port 0).
One for ON and one for OFF. I included these in the schedule: OFF at 2:01 AM, ON at 5:59 AM. (Question: how long does the duration need to be for these on/off commands in the schedule? I gave them two minutes each.)
I set the date & time of the unit with the downloadable script referenced elsewhere on this forum. So that's all set.
Problem: NOT WORKING.
In fact, not seeing any content at all. If I publish an all-day/every-day schedule, I can see the content just fine. So I must be doing something wrong.
Now what?
Here's the spec from Samsung for what I need to send:
"Issued IDs can be displayed in hexadecimals. However, ID 0 must be displayed as 0xFF.
All communications take place in hexadecimals. The checksum is calculated by adding up all values except the header. If a checksum adds up to be more than 2 digits as shown below (11+FF+01+01=112), the first digit is removed."
Command type: Power control
Command: 0x11
Value Range: 0~1
Example:
E.g. Power On & ID=0
//
Header: 0xAA
Command: 0x11
ID
Data length: 1
Data: "Power" (1 for on, 0 for off)
Checksum
//
I don't know hex, but one of my colleagues does, and he got out his scientific calculator and says the codes to send are as follows:
ON: %AA%11%FF%01%01%BC
OFF: %AA%11%FF%01%01%BB
Are these correct?
What else can I do to try to fix this? Has to be delivered to the client next week.
Link to the download page for the Samsung manual for the sufficiently motivated (though I've attached the relevant screen shots):
http://www.samsung.com/us/support/owners/product/LH55PECPLBA/ZA
Control codes start on page 48.
Many thanks!
best,
FBC
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