HIMatrix 9 Configuring Communication
HI 800 023 E Rev. 1.01 Page 63 of 72
T
R
= t
1
+ t
2
+ t
3
+ t
4
+ t
5
T
R
Worst case reaction time
t
1
2 * watchdog time of the HIMatrix controller 1.
t
2
ReceiveTMO
1
t
3
2 * watchdog time of the HIMax controller.
t
4
ReceiveTMO
2
t
5
2 * watchdog time of the HIMatrix controller 2.
Remark: HIMatrix controller 1 and HIMatrix controller 3 can also be identical.
9.2.7 Terms
ReceiveTMO
Monitoring time of controller 1 within which a correct response from
controller 2 must be received. Once the time has expired, safety-
related communication is terminated.
Production Rate Minimum interval between two data transmissions.
Watchdog Time
Maximum permissible duration of a controller's RUN cycle (cycle
time).
Worst case re-
action time
The worst case reaction time is the time between a change in a
physical input signal of controller 1 and a reaction on the corre-
sponding output of controller 2.
9.2.8 Assigning safeethernet Addresses
Take the following points into account when assigning network addresses (IP addresses)
for safeethernet:
The addresses must be unique within the network used.
When connecting safeethernet to another network (company-internal LAN, etc.), make
sure that no disturbances can occur. Potential sources of disturbances include:
- The data traffic.
- Coupling with other networks (e.g., Internet).
In these cases, implement suitable measures to counteract against such disturbances
using Ethernet switches, firewall and similar.
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