Z2: NC/PLC interface signals
18.2 Distributed systems (B3)
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
851
Online request interface
DB19 DBW100 ONL_REQUEST
Client_Ident Control unit would like to go online and use the online request interface. HMI first
writes its Client_Ident as a request.
Bit 8 .. 15: Bus type: MPI 1 or BTSS 2
Bit 0 .. 7: HMI bus address
DB19 DBW102 ONL_CONFIRM.
Client_Ident If the online request interface is not being used by another control unit, the PLC
returns the Client identification as positive acknowledgement.
Bit 8 .. 15: Bus type: MPI 1 or BTSS 2
Bit 0 .. 7: HMI bus address
DB19 DBW104 PAR_CLIENT_IDENT HMI parameter transfer to PLC
Client_Ident Bit 8 .. 15: Bus type: MPI 1 or BTSS 2
Bit 0 .. 7: HMI bus address
DB19 DBB106 PAR_MMC_TYP HMI parameter transfer to PLC
HMI type from NETNAMES.INI Type properties of the control unit configured in file NETNAMES.INI. Evaluated
by the PLC when MMC is suppressed (server, main/secondary operator panel,
...), see description of file NETNAMES.INI
DB19 DBB107 PAR_MSTT_ADR HMI parameter transfer to PLC
MCP address from NETNAMES.INI Address of MCP to be switched over or activated/deactivated with the control
unit.
Parameter from NETNAMES.INI
255 No MCP is assigned to control unit, no MCP will be activated/deactivated
DB19 DB108 PAR_STATUS PLC sends HMI pos./neg. online permission
ONL_PERM (5) PLC notifies HMI as to whether control unit can go online or not. The meaning of
the signal is dependent on PAR_Z_INFO:
DB19 DBB109 PAR_Z_INFO PLC sends HMI pos./neg. online permission
No. of HMI-PLC online interface, OK
(10)
PLC issues the online enabling command to the requesting control unit.
Control unit can then go online to this NCU.
Bit 0 ..3: Set
Bit 4 .. 7: No. of HMI-PLC online interface with which the control unit should
connect:
First HMI-PLC online interface
Second HMI-PLC online interface
MMC_LOCKED (13) The requesting control unit cannot go online. Two control units on which
uninterruptible processes are in progress are connected online to this NCU. The
PLC cannot suppress either of the two control units.
PLC_LOCKED (14) The control unit switchover disable is set in the HMI-PLC interface.
PRIO_H (15) The requesting control unit cannot go online. Two control units that are both
higher priority than the requesting control unit are connected online to the NCU.
The PLC cannot suppress either of the two control units.
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