[ ] Counter request [✓] General request counter
[✓] Counter freeze without reset [✓] Request counter group 1
[ ] Counter freeze with reset [✓] Request counter group 2
[ ] Counter reset [✓] Request counter group 3
[✓] Request counter group 4
Addresses per group have to be specified
Parameter Loading (Object-Specific Parameter)
[✓] Threshold value
[ ] Smoothing value
[ ] Low limit for transmission of measured value
[ ] High limit for transmission of measured value
Parameter Activation (Object-Specific Parameter)
[ ] Act/deact of persistent cyclic or periodic transmission of the addressed object
File Transfer (Station-Specific Parameter)
[ ] File transfer in monitor direction F_FR_NA_1
[ ] File transfer in control direction F_FR_NA_1
A4.2 Communication Interface per IEC 60870-5-103
This section incorporates Section 8 of IEC 60870-5-103, including definitions
applicable to the P634.
A4.2.1 Interoperability
A4.2.1.1 Physical Layer
A4.2.1.1.1 Electrical Interface
[✓] EIA RS 485
[✓] No. of loads: 32 for one device
Note: EIA RS 485 defines the loads in such a way that 32 of such loads can be
operated on one line. For detailed information see EIA RS 485, Section 3.
A4 Telecontrol Interfaces
P634
P634/EN M/R-42-A // P634‑311‑653 A4-9
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