INFICON BPG402-SD ATM to Ultra-High Vacuum Gauge (DeviceNet) - Manual (Page 12)

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tira46e1 (2004-11) BPG402-SDv1.cp
Bit Function
0 ALARM/device-common
(The alarm or warning is not specific to the device type or device type
manufacturer.)
1 ALARM/device-specific
2 ALARM/manufacturer-specific
3 reserved, set to 0
4 WARNING/device-common
5 WARNING/device-specific
6 WARNING/manufacturer-specific
7 1
Expanded Method
The formats of these two attributes are identical. Therefore, they are described
together:
Attributes that relate the detailed status of the alarms or warnings associated with
the device. Each attribute is a structure containing three members; these three
members, respectively relate the detailed status of exceptions that are common
(i.e., not device-specific), device-specific and manufacturer-specific. The common
and device-specific detail definitions are defined below. A manufacturer-specific
detail has a length of 1 byte. A SIZE value of one indicates that one byte detail is
defined for the associated exception detail structure.
Each of the three structure members is defined as a structure containing an or-
dered list (i.e., array) of bytes of length SIZE, and an unsigned integer whose value
is SIZE. Each of the bytes in each array has a specific mapping. This mapping is
formatted as 8 bits representing 8 independent conditions, whereas a value of 1
indicates that the condition is set (or present), and a value of 0 indicates that the
condition is cleared (or not present). Note that if a device does not support an
exception detail, the corresponding bit is never set. The bitmaps for alarms and
warnings in the corresponding attributes are structured in parallel so that a condi-
tion may have either alarm or warning set depending on severity. If a condition
inherently cannot be both alarm and warning, then the parallel bit position corre-
sponding to the other state will remain "0".
This structure relates exception conditions (i.e., alarms or warnings) which are
common to all devices within the Hierarchy of Semiconductor Equipment Devices.
The Detail element of the structure is an ordered list (i.e., array) of bytes of length
[SIZE=2] which is the value of the structure element Size.
Two bytes Common Exception Detail are provided: Common Exception Detail[0]
and Common Exception Detail[1]. The specific exception associated with each of
the bitmaps is given in the table below. The SIZE for this revision is two (2).
Bit Common Exception Detail [0] Common Exception Detail [1]
0 0 0
1 0 0
2 EPROM exception 0
3 EEPROM exception power supply input voltage
4 RAM exception 0
5 reserved 0
6 0 0
7 0 0
Exception Status Bit Map
Exception Detail Alarm and
Exception Detail Warning
Common Exception Detail
Common Exception Detail
Attribute Values