10 system connections, 1 overview – Pilz PSENvip RL D P User Manual
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10.1
Overview
10
System Connections
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10-4
Tool class 3
The user program confirms tool class 3. The PSENvip switches to a
RUN state.
The PSENvip switches to a HOLD state if
– No communication is established (within 30 s on power-up, other-
wise within 200 ms).
– The tool class sent by the PSENvip and reflected by the user pro-
gram do not match.
– Errors occur in the communications protocol.
– Overall communication takes longer than 600 ms.
– A single communication phase takes longer than 200 ms (see
Chapter 4-4, section entitled "Communication sequence").
The switchover point must be raised in comparison with the switcho-
ver point for tool class 3. The switchover to lower speed must take
place even earlier.
The user program must convey a higher switchover point to the CNC
controller and then monitor this.
If the press is at top dead centre (TDC), each press stroke must be
acknowledged before it is initiated. Only after this acknowledgement
are the OSSDs switched on, enabling rapid traverse for the press.
Systemanbindung_PSS4000_Beispiel_Einl
Program example for communication between the PSENvip and a safety
system from the automation system PSS 4000:
Systemanbindung_PSS4000_Beispiel
FUNCTION_BLOCK PSENvipCom
VAR_INPUT
bStartToolChangeE0
: SAFEBOOL;
// Start signal for the communication from
PSENvip
bValidToolChangeE1
: SAFEBOOL;
// Tool value from PSENvip is valid
bToolTypeE2
: SAFEBOOL;
// Tool value Bit 0 from PSENvip
bToolTypeE3
: SAFEBOOL;
// Tool value Bit 1 from PSENvip
uiToolTypeCNC
: SAFEUINT;
// Tool value from the CNC
END_VAR
VAR_OUTPUT
bAcknowledgeToolChangeA0
: SAFEBOOL;
// Acknowledge signal for the communication
from PSS4000
bAcknowledgeToolTypeA1
: SAFEBOOL;
// Tool value Bit 0 from PSS4000
bAcknowledgeToolTypeA2
: SAFEBOOL;
// Tool value Bit 1 from PSS4000
END_VAR
VAR
RisingFlagE0
: R_TRIG;
// FUNCTION block rising edge for Signal E0