2.2 Contact Nipples Designation
With 4 contact nipples, the PTM 200 offers 2 channels with 4 action states each (upper/lower
nipple is pressed/released when activating the energy bow). The nipples’ designation is as
follows:
O
I
B
A
CHANNEL
STATE
O
I
B
A
CHANNEL
STATE
Figure 10: Contact nipple designation
Radio signals of the PTM 200 device are event-controlled (energy bow is pressed/released)
with contact nipple code (channel/state) and unique device identification (fixed 32-bit ID).
When operating more than one nipple at the same time, note that PTM 200 sends multiple-
button code combinations (switch device of Type 2, unlike PTM 100):
•
N-message:
One or two contact nipples have been pressed when activating the
energy generator
Æ
Message with nipple code and pressed/released event status of the
energy bow is sent.
•
U-message:
No contact nipple was pressed when activating the energy generator,
or 3 or 4 nipples have been pressed
Æ
Message with pressed/released event status
of the energy bow is sent and the information if either none or more than two nipples
have been pressed. Note that it can’t be differentiated if 3 or if 4 nipples have been
pressed.
Note: Due to the mechanical hysteresis of the energy bow, in most rocker switch
device implementations, pressing the rocker sends an N-message and releasing the
rocker sends a U-message!
©EnOcean GmbH, A. Anders
Page 12 of 22
PTM 200 User Manual V1.1
