GE 90-30/20/Micro BLKCLR (WORD)

GFK-0467K Chapter 4 Series 90-30/20/Micro Instructions Set 4-75
4
BLKCLR (WORD)
Use the Block Clear (BLKCLR) function to fill a specified block of data with zeros.
The BLKCLR function has two input parameters and one output parameter. When the function
receives power flow, it writes zeros into the memory location beginning at the reference specified
by IN. When the data to be cleared is from discrete memory (%I, %Q, %M, %G, or %T), the
transition information associated with the references is also cleared.
The function passes power to the right whenever power is received.
_____
| |
(enable) —| BLK_|— (ok)
| CLR_|
| WORD|
| |
| |
| |
(word to be cleared) —|IN |
| LEN |
|00001|
|_____|
Parameters:
Parameter Description
enable When the function is enabled, the array is cleared.
IN IN contains the first word of the array to be cleared.
ok The ok output is energized whenever the function is enabled.
LEN LEN must be between 1 and 256 words.