User Guide
DVS-21
02/2018
• V.1.0 • L. Wolle
47/131
© 2017 ProCom
®
Professional Communication & Service GmbH • Technical changes reserved.
Operation mode
Safe transmit
Transmission of safety-related status information by means of multiple systems by using an
additional data link layer. (Transmitter)
Operating mode for the recording of status information, alarm contacts, etc.
Transmission takes place via each port by means of a line telegram (line) and two additional lines for
verification of the state. The lines used for verification are clocked with variable timing. The state is
captured by Optocoupler 1. If the optocoupler is switched on, the lines are synchronized for verification.
Transmission and reception are displayed by a flashing green signal at LED AI.
(Synchrony = double flash, Differential mode by single flash)
Timer (Toggle) (high)
Clocking of the lines for verification (Factor 2 secs)
Timer (Toggle) (low)
Clocking of the lines for verification (Factor 8 millisecs)
Total time = High + Low
Line function:
Port 1 - 4:
Line 1 M -> CPU Optocoupler 1
Line 7 M -> CPU Line for verification
Line 8 M -> CPU Line for verification
Optocoupler 2 and relays may be used independently for other applications!
Display and control elements:
LEDs
I GREEN - ON
Input voltage at Optocoupler 1 detected
Al
GREEN - FLASHING (double) Line synchronized for verification (input active)
GREEN - FLASHING (single) Line for verification in differential mode
