Huawei EMU, User Manual, Page: 29 / 70

Figure 2-13 Monitoring port for Boolean signals
NOTE
l
The common types of Boolean signals are the dry contact point type, OC type, voltage type, and current
type.
l
All the monitoring ports for Boolean signals support Boolean signals of the dry contact point type and
OC type.
l
Ports S13 - S16 and S29 - S32 support Boolean signals of the voltage type.
Table 2-9 lists the valid values of Boolean signals of the voltage type.
Table 2-9 Valid values of Boolean signals of the voltage type
Value Range of the Input Voltage
Signal (x) Definition
x ≤ 3 V DC Low level
x
≥
5 V DC High level
3 V DC < x < 5 V DC Unspecified
Table 2-10 lists the meanings of the terminals of the monitoring port for Boolean signals.
Table 2-10 Meanings of the terminals of the monitoring port for Boolean signals
Silkscreen Meaning
Si+ (i ranges from 1 to 32) Positive Boolean input of port i
Si- (i ranges from 1 to 32) Negative Boolean input of port i
NOTE
You can set the DIP switches SW12A, SW12B, SW24A, and SW24B to choose whether to use the
monitoring port for Boolean signals. For details, see
2.3 Internal Structure of the EMU .
EMU
User Guide
2 Overview of the EMU
Issue 13 (2009-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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