Filter
Top Products
GFK-0467K Chapter 4 Series 90-30/20/Micro Instructions Set 4-135
4
Note
After using SVCREQ function #1 with the parameter block on the previous page,
Release 8 and higher CPUs will provide the return values 0 for Normal Sweep, 1
for Constant Sweep. Do not confuse this with the input values shown below.
Successful execution will occur, unless:
1. A number other than 0, 1, 2, or 3 is entered as the requested operation:
0 Disable CONSTANT SWEEP mode.
1 Enable CONSTANT SWEEP mode.
2 Set a new timer value only.
3 Read CONSTANT SWEEP mode and timer value. (See Note
above).
2. The time value is greater than 2550 ms (2.55 seconds).
3. Constant sweep time is enabled with no timer value programmed, or with an old value of 0 for
the timer.
After the function executes, the function returns the timer state and value in the same parameter
block references:
0 = disabled
1 = enabled address
current timer value address + 1
If word address + 1 contains the hexadecimal value FFFF, no timer value has ever been
programmed.