Allen-Bradley ProcessLogix 1756-IA16, Reference Manual, Page: 108 / 120

Publication 1757-RM810A-EN-P - May 2002
3-68 Functional Blocks
TEXTARRAY
TIMER
Description Provides storage for up to 120 text strings that are accessible through the corresponding string configuration
parameter (STR [n]). Where “n” is the number of the text string.
Function
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Provides predefined text (STR [1..120]) strings to other blocks.
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Number of string values (NSTRING) is user configurable.
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The length of the text strings (STRLEN) is user configurable as 8, 16, 32, or 64 characters
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Supports a maximum size of 960 two-byte characters. The maximum data combinations that you can configure
through NSTRING and STRLEN values are as follows.
– If NSTRING is 15 and STRLEN is 64, then the STR [n] range is 1 to 15.
– If NSTRING is 30 and STRLEN is 32, then the STR [n] range is 1 to 30.
– If NSTRING is 60 and STRLEN is 16, then the STR [n] range is 1 to 60.
– If NSTRING is 120 and STRLEN is 8, then the STR [n] range is 1 to 120.
Inputs/Outputs Up to 120 output strings (STR [1..120]), depending on the number of string (NSTRING) and length of string (STRLEN)
values configured.
Parameters ACCLOCK
NSTRING
ORDERINCM
STR [1..120]
STRLEN
Description Provides capability to time process events or create known delays.
Function Used to keep track of elapsed time during a process and provides indication when elapsed time reaches predefined
limit.
Inputs/Outputs SO is only exposed block connection, but you can expose other block parameters through the Configure Block form in
Control Builder.
Commands are sent to timer in one of two ways:
1. By operator using COMMAND parameter.
2. Through connections to parameters STARTFL, STOPFL, RESETFL, and RESTARTFL.
Parameters COMMAND
ORDERINCM
PV RESETFL
RESTARTFL
RV SO
SP
STARTFL STATE
STOPFL
TIMEBASE