Siemens SINUMERIK Series Function Manual

Z2: NC/PLC interface signals
18.2 Distributed systems (B3)
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
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2. HMI/PLC online interface
The signals of the 2nd HMI/PLC online interface are analogous in meaning to the signals of
the 1st HMI/PLC online interface (MMC2_ ... replaces MMC1_...)..
Sign-of-life monitoring HMI
After a control unit has gone online to an NCU, the HMI sign of life is set in the interface.
(E_BTSSReady, E_MMCMPI_Ready, E_MMC2Ready)
The signals are automatically set by the HMI when the control unit goes online and stay set
for as long as it remains online.
They are provided separately for each HMI/PLC interface and used by the PLC to monitor
the HMI sign of life.
First HMI/PLC online interface
A distinction between an control unit link via the OPI (1.5 Mbaud) or the MPI (187.5 kbaud) is
made on this interface.
The signal corresponding to the bus type is set while the control unit is online.
DB10 DBX104.0 MCP1 ready
FALSE MCP1 is not ready
TRUE MCP1 is ready
DB10 DBX104.1 MCP2 ready
FALSE MCP2 is not ready
TRUE MCP2 is ready
DB10 DBX104.2 HHU ready
FALSE HHU is not ready
TRUE HHU is ready
DB10 DBX108.3 E_MMCBTSSReady
FALSE No control unit online to OPI
TRUE Control unit online to OPI
DB10 DBX108.2 E_MMCMPIReady
FALSE No control unit online to MPI
TRUE Control unit online to MPI

Siemens SINUMERIK Series Specifications

General

Axes Control	Up to 31 axes
Category	Control Unit
Manufacturer	Siemens
Series	SINUMERIK
Control Type	CNC
Communication Interfaces	Ethernet, USB
Operating Temperature	0°C to 45°C
Protection Class	IP20
Power Supply	24V DC
Display	Color TFT LCD