Siemens SIMATIC 6DL1 136-6AA00-0PH1 - Page 114

Typical response time = (N * Response time per channel/channel pair + Basic response time) *
Smoothing
N Number of activated channel pairs
Examples:
• Channel 0 activated, all other channels deactivated: N = 1
• Channel 0 and 4 activated, all other channels deactivated: N = 1
• Channel 0 and 1 activated, all other channels deactivated: N = 2
• Channels 0, 1, 4, 5 activated, all other channels deactivated: N = 2
Maximum response time under error-free conditions (Worst Case Delay Time, WCDT)
The maximum response time in the error-free scenario (Worst Case Delay Time, WCDT) can be
calculated according to the following formula:
Max. response time = (2 * N * Response time per channel + 3 * Basic response time) *
Smoothing
N Number of activated channel pairs
Maximum response time when a fault is present (One Fault Delay Time, OFDT)
The maximum response time in the presence of a fault (One Fault Delay Time, OFDT) can be
calculated according to the following formula:
Max. response time (to channel fault) = 2 * N * Response time per channel + 3 * Basic response
time
N Number of activated channel pairs
Response times
C.1 Response times
F-AI 8xI 2-/4-wire HART HA
114 Equipment Manual, 09/2021, A5E50557845-AA