Cerabar M
Endress+Hauser 17
Dynamic behavior
PROFIBUS PA
Dead time, time constant (T63)
For PROFIBUS, the dead time consists of the internal dead time of the device, the response time of the AI
function block and the cycle time of the communication buffer:
Response time
• Cyclic: approx. 10 ms per request
• Acyclic: < 50 ms
All values are typical values.
Cycle time (update time)
The cycle time in a bus segment in cyclic data communication depends on the number of devices, the segment
coupler used and the internal PLC cycle time.
Damping 4 to 20 mA
• Via DIP switch on the electronic insert, switch position "On" = 2 s, switch position "Off" = 0 s
4 to 20 mA HART
• Via switch on the electronic insert, switch position "On" = set value, switch position "Off" = 0 s
• Via handheld terminal or PC with operating program, continuous 0 to 40 s
• Factory setting: 2 s
PROFIBUS PA
• Via handheld terminal or PC with operating program, continuous 0 to 40 s
• Factory setting: 0.0 s
Types Dead time t
1
Time constant (T63), t
2
all 440 ms 240 ms
PMP46/48 additional influence from the diaphragm seal
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