Plc Status Display - Siemens SINUMERIK 880 SW 6 Planning Manual

05.91
19.2

PLC status display

Any PLC variables (I, Q, F, T, C, DW) can be displayed and altered with the PLC status
display. Statuses can be displayed as either a word or an individual bit. In the case of word
displays, the content can be displayed either bit by bit, as a fixed-point number or as a
hexadecimal number. Variables to be displayed are selected on the operator panel keyboard.
Operation:
See SINUMERIK 880 Operator's Guide.
19.3 Messages
Note:
The basic principles that apply to messages are also described in the "Display of messages"
Section.
To display messages on the SINUMERIK 880, the function blocks for message display (FB
package 0) must be loaded in the PLC and called in the PLC user program. As they occur, NC
and PLC messages are displayed in the alarm line of the NC screen (line 2) when the display
is enabled by an interface signal. If several messages are present at the same time, only the
one with the highest priority, according to the following list, is displayed
• NC alarm
• PLC error message
• PLC operational message
• NC message
Messages not appearing in the alarm line can be displayed on the screen by operating the
appropriate softkeys or paged through in the message line by setting the PAGE DISPLAY IN
MESSAGE LINE bit (in the user program, e.g. with clock frequency or keys "V" and "/\",
DB 40, DL 3).
Edge of
screen
NC display layout
©
Siemens AG 1991 All Rights Reserved
SINUMERIK 880 (PJ)
19 Display Programs for PLC Data and Messages
Modes (14 characters)
Operating states (24 characters)
Channel number (3 characters)
Monitor No., text (alarms and
messages, 41 characters)
NC displays: text, graphic
(41 x 12 characters)
Operator dialog guidance
(24 characters)
Key assignment inputs
(17 characters)
Text strip with max. 5 softkey
functions (5 x 7 x 2 characters)
6ZB5 410-0HE02
19.2 PLC status display
19–3