Simatic TI505 analog alarms to HMI?

Hallo experts,

I want to generate equivalent analog alarms as in TI505 analog alarm PLC program functions with standard HMI alarms thresholds for analog variables.

Is there a way to use existing AA blocks with modern HMIs? Which bits  (V) are set when HH alarm is active,for example?

Hi Cizzy,

Yes there is a way to use Analog Alarm Blocks with HMI systems.

Each Analog Alarm block has an attribute that is called Alarm V-flags  or Memory type AVF.

for ex. for AA block 10 this will be AVF10

Each bit in the AVF memory type has a distinct signification.Here you will find bits for H, HH, L, LL alarm etc..

See attached pdf for complete description. Remember that TI505  bit numbering is from left to right.

some HMI systems have a driver that is capable of reading these AVF memory types directly.  Some do not, in that case you will create in the PLC program an SFPGM function that copies the AVF memory types to V-memory that can be read by all HMI's that have a driver for TI505 PLC.

it's all so beautyful in TI505/ CTI 

Regards,