Operating instructions

Mounting and connecting
4.3 Connecting the HMI device
MP 377, MP 377 PRO (WinCC flexible)
Operating Instructions, 10/2008, 6AV6691-1DR01-0AB0
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4.3 Connecting the HMI device
4.3.1 Overview
Requirement
● The HMI device must be mounted according to the specifications of
these operating instructions.
● Always use shielded standard cables for the data cable.
Additional information is available in the catalog and online order system at
"
http://mall.automation.siemens.com".
Connection sequence
Connect the HMI device in the following sequence:
1. Equipotential bonding
2. Power supply
Perform a power-up test to ensure the power supply is connected with
the correct polarity.
3. PLC
4. Configuring PC as necessary
5. I/Os as necessary
NOTICE
Damage to the HMI device
If you do not keep to the connection sequence you could damage the HMI device.
Ensure you connect the HMI device in the sequence stipulated above.
Disconnect the HMI device by completing the above steps in reverse order.
Connecting the cables
When connecting the cables, ensure that the contact pins are not bent. Secure the cable
connectors by screwing the connector onto the socket.
Provide adequate strain relief for the cables. For this purpose, the MP 377 PRO contains a
strain relief bar below the ports on the rear of the HMI device.