Another cause might be that the device is equipped with a low-power interface. These interfaces provide much smaller voltages and currents on the send lines than normal RS232 interfaces. These interfaces are used on the RS232 side in many laptops/desktops and also in some USB adapters. For more information please refer to the manufacturer concerned.
QUESTION: Why are no characters transmitted by my
keyboard to the Power PG?
There can be different causes, if no input (or mouse movements) are
transmitted by the keyboard to the Power PG.
The status LED does not display anything:
The Power PG is out of the reach of the keyboard and cannot
receive any infrared signals.
Reduce the distance between Power PG and keyboard or align the
keyboard with the Power PG more efficiently.
The status LED flashes red while keyboard input:
You have changed the keyboard ID of the keyboard unintentionally
during character input over the keyboard. This might occur by using
the keys "Fn"+"Alt"+, "ID" simultaneously (whereby "ID" corresponds
to a number of the numeric block).
Or you have used the keyboard of an adjacent Power PG which has a
different ID qualifier.
Remedy: Mark the areas provided with the ID qualifier
at the Power PG and at the keyboard to avoid a confusion of
keyboard and equipment.
The keyboard ID can be set correctly again without wrong inputs
into the Power PG or the adjacent Power PG.
If the ID set in the set-up is known, the right connection simply
can be set again with the key combination "Fn"+"Alt"+, "ID", (ID
qualifier). The "ID" has to be entered with a number of the numeric
block and not with the numbers from the alphanumeric block.
For the confirmation of the right ID, the status LED in the right
upper screen area flashes.
Shoud the ID be unknown, the connection simply can be
established again by trying out the possible ID of 0 to 9. The key
combination "Fn"+"Alt"+, "ID", has to be hit simultaneously,
whereby "ID" corresponds to a number of the numeric block. Between
the tries, all keys must be let go. The right ID is indicated in
the right upper screen area by flashing of the status LED.
The status LED is permanently red:
The cause for this state is that the charge of the batteries of
your keyboard is low or none at all.
You can immediately continue to work with the USB cable provided
along with the PG. Connect the USB cable to the keyboard and to a
free USB port of the PG. The USB cable provides the keyboard with
Exchange the batteries on the next occasion. 4 Alkaline batteries
of the type "Mignon (AA)" are needed.
Note: The USB cable is only for power supply!
Data is still transmitted over the infrared interface.
The USB cable is not for charging the batteries or the
Note about the connection of an external mouse: If you
would like to connect an external mouse to the Power PG, the
touchpad of the keyboard is still active. You can deactivate the
touchpad in the set-up by clicking on "Menu Main > Hardware
Options > Touchpad" setting "Disabled" there.
There is also the possibility of deactivating the touchpad
during operation. To do so, use the key combination "Fn" + "~".
With the help of this key combination, the touchpad also can be
reactivated. Please take into account that the touchpad needs about
5 seconds for initialization. You should not execute any touchpad
operations during initialization.
Third party manufacturer keyboard does not work with the Field-/ or Power PG
Why does my USB keyboard not work with the Power-/ or Field-PG?
A standard keyboard has been connected to the Field or Power-PG.
After a while the PG starts showing different abnormal behavior and
becomes impossible to operate. In the USB V1.1 specification, a
voltage range of 4.75V up to 5.25V is specified, which corresponds
to the rectified voltage of 5V ±5%.
Some manufacturers of keyboards and mices do not keep up with
this range. During the examination of one of these keyboards, it
appears that difficulties occure after about 60 to 90 seconds
starting at a tension of 5.09V. With increasing tension the
The programming devices of Siemens provide a regulated tension
of 5.14V and fulfill the general EMV requirements for the
The problem can be solved as follows:
Use of a HUB, which is inserted between the keyboard and the
Use of the unblocked, industry fit USB keyboard which complies
with the general EMV requirements.
(e. g. IPC-catalog: Microsoft Office Keyboard model
How do you connect the PG 675/685 and the PG7xx programming devices to the PLCs S5 150A/K/U/S, S5 130WB and S5 110S?
There are no problems when setting up connections from the PG 675/685 and the PG 7xx programming devices to the PLCs S5 150A/K/U/S, S5 130WB and S5 110S?
Since the PLCs have an interface module AS 511 (25-pin), it is possible to connect the PGs. You must just pay attention to the following.
You only need plug-in connecting cable 6ES5 731-0xxx0 for PGs 675 and 685.
If you want to connect a PG 7xx, you need the adapter 6ES5 731-6AG00 in addition to the plug-in connecting cable 6ES5 731-0xxx0. There is no direct cable available for the PGs 7xx, but it can be made following the attached cable assignment diagram.