Alstom GEM80-400 Series, Technical Manual

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GEM80-400 2. Controller Architecture and Program Operation
Issue 3 04/99 ALSPA GEM80-400 SERIES CONTROLLERS TECHNICAL MANUAL Page 2-21
Function Instruction GEM 80
Special
Function Remarks Number of
Instruct-
ions Number of
Table
Locations
used by
VALUE Execution
Time in
µ
s
Integer
conversion FIX S79 Convert floating point to
BCD 2 - -
10. Block
Instructions Enclose
conditionally
executed rungs START OF
BLOCK - Conditionally executed
block of ladder diagram
instructions can be nested
to a depth of 16 1 - 1.5
- END OF
BLOCK - - 1 - -
- JUMP - JUMP forward to LABEL - - -
- LABEL - LABEL associated with
JUMP - - -
- SEQELEM - Sequence element - - -
11. Data
Moving Locate data
table address LOCATE S20 These two GEM 80 Special
Functions, S20 and T20, are
usually used together for
moving groups of data
from one area of memory
to another. May be used
for locating an internal
address required by
various GEM 80 Special
Functions. Provides pointer
to data table 2 1 100
Move data
between data
table addresses MOVE T20 Commonly used in
conjunction with S20,
moves blocks of data
tables 2 0 or 1 See Note 19
Cyclic store STORE T30 First in first out store 2 4 + N (See
Note 20) 130
Get word GETWORD S19 Indirect data access 2 1 96
Fill array FILL T17 Fill array with value 2 0 or 1 See Note 21
Put word PUTWORD T29 Indirect output of word 2 1 96
Collate COLLATE T37 Collates random bits or
words into a group of
adjacent data table
locations 1 0 See Note 22
12. Code
Conversion BCD input
conversion BCDIN S1 Converts up to 4 decades
of BCD to binary 1 0 36
BCD output
conversion BCDOUT S2 Converts binary to up to 4
decades of binary coded
decimal 1 0 32
Convert gray
code to binary GRAYBIN S9 Converts gray code input
to binary 2 1 29
13. Serial Port
Alpha-
numeric
Input and
Output Print text PRITEXT S38 Enables messages stored
in controller memory to b e
output to serial port/printer 2 (C + 1)/2
(See Note 23) 144
Print PRINT T38 Enables user definable
messages to be output on
a serial port/printer 2 N (See Note
25) See Note 24
Character input CHARIN T39 Read input from serial port 2 (C + 1)/2
(See Note 23) 115
Message store
OR retrieval GETTEXT S21 Store message strings 2 OR 1 2 -
14. Output
Functions Output OUTPUT S8 Intermediate output from
rung 2 1 1.5
15 Starnet Configure Ports CONFIG T33 Used to configure
STARNET ports 2 1 See note 29
Send Message SEND T34 Transmit outgoing data 2 2 See note 30
Receive
Message RECEIVE T35 receive incoming data 2 3 See note 31
Log Statistics STATS T36 Report STARNET errors and
statistics 2 1 1300