Siemens SIMATIC EMS400S PSB-S Operating Instructions Manual page 78

Glossary
Current collector carrier
6 current collectors are mounted to the current collector carrier. The current collectors move
inside the → contact conductors and maintain electrical contact. This system ensures
uninterrupted power supply and data exchange while the → EMS carrier is moving.
Data subframe
The data subframe relates to communication between the PSB-S and PSB-C modules. The
data subframe encompasses the START and PRES signals, the → user data, the → control
data, the checksum and the time for preparation of the user data.
Device error, general
The general device error is a function failure of the → carrier controller that triggers the
diagnostic entry → error.
EMS
Automatically controlled electric monorail system for internal transport – e.g. a conveyor
system.
EMS carrier
Mobile component of the → EMS and carrier of the → carrier controller.
EMS rail
Component of the carrying structure of the EMS. As carrier rail it serves to suspend and
move the → EMS carriers. The → contact conductors installed on the EMS rail provide the
means for the power supply and communication. The contact conductors are made of an
insulated standard U profile that is contacted on its inside by the current collectors.
The combination of UMC rails and bypass sections forms the rail system of the → EMS.
EMS400S
Siemens product name and type of → plant controller with a → carrier controller – particularly
for → EMS.
Enable bit
The enable bit is mapped to the PIQ of the plant segment/carrier controller and set by the
function blocks.
The enable bit enables data transmission to the → RAIL. In the → PSB-S module, the enable
signal applies simultaneously to all of its three connected → plant segments.
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Operating Instructions, 03/2014, A5E03474166-03
PSB modules