Siemens 500 NIM - Manual (Page 83)

NIM Primitives 4-30 SIMATIC TIWAY I Series 500 NIM User Manual
Series 500 NIM Primitive Descriptions (continued)
Availability: Releases 1.1, 2.1, 2.2 and 3.0
The native Primitive 01 allows access to an attached device by using a Task
Code which is unique to the specific device addressed. By using 01, a
programmer can embed a controller-unique Task Code and can access
anything in controller memory, for example, that a VPU can access.
Request: LLLL 01 DDDD, where DDDD is defined by the task codes of the
device being accessed.
Response: LLLL 01 HH DDDD, where DDDD is defined by the task codes of
the device type accessed.
Symbol Value Definition
HH Operational status
DDDD Defined by the type of device being accessed.
Native Primitive –
Code 01