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Understanding the Agilent E1330B Digital I/O Module 43
Chapter 4
The STS Line Each port has a status line labeled STS. The STS line is an input line to the
Digital I/O module. The use of the STS line is only at the register level, and
is not supported by SCPI commands. Refer to Appendix B for more
information about this line.
The PIR Line Each port has a peripheral interrupt request line labeled PIR. The PIR line is
an input line to the Digital I/O module. The use of the PIR line is only at the
register level, and is not supported by SCPI commands. Refer to Appendix
B for more information about this line.
The RES Line Each port has a reset line labeled RES. The RES line is an open collector
output line to the peripheral. Control of the RES
line is only at the register
level and is not supported by SCPI commands. Refer to Appendix B for
more information about this line.
Default and Reset States
At initial power-on and following the *RST command, the Digital I/O
module is set to the following states:
Setting the Polarity
The logical true level of the control (CTL) line, the flag (FLG) line, and the
data lines of each port can be set to either TTL high (>2.5V) or TTL Low
(<1.4V) levels. SCPI commands use the POLarity keyword as:
[SOURce:]DIGital:CONTroln:POLarity <POSitive or NEGative>
to set the control line's (CTL) polarity on port n.
[SOURce:]DIGital:FLAGn:POLarity <POSitive or NEGative>
to set the flag line's (FLG) polarity on port n.
[SOURce:]DIGital:DATAn:POLarity <POSitive or NEGative>
to set the data lines polarity on port n.
Example DIG:DATA1:POL POS
Sets the polarity to positive on port 1 data lines, a TTL high will be input as
a 1, or a bit set to 1 will output a TTL High level.
The
*RST (reset) condition is positive polarity for control (CTL),
flag (FLG), and data lines on all ports.
CTL line: 0 = TTL Low
I/O
line: TRUE = input = TTL High
Data, FLG, and CTL line Polarity: POSitive
Handshake mode: NONE
- *E1330-90007* 1
- Contents 3
- 2 Contents 4
- Contents 3 5
- 4 Contents 6
- Certification 7
- Safety Symbols 8
- WARNINGS 8
- Documentation History 8
- DECLARATION OF CONFORMITY 9
- Getting Started 13
- 12 Getting Started 14
- Chapter 1 14
- Table 1-1. Data Lines 14
- Instrument Definition 15
- Downloading SCPI Drivers 15
- SCPI Command 16
- Format Used in This 16
- Specifying SCPI 16
- Commands 16
- Specifying Multiple Port 17
- Operations 17
- Initial Operation 18
- Chapter 2 19
- Using This Chapter 19
- Setting the Address Switch 20
- Enabling Pull-ups 21
- Selecting the Interrupt Line 22
- Combining the Flag Lines 23
- Using with External Pull-ups 30
- Typical Connection 31
- Chapter 3 33
- Addressing the Module 33
- Operation Overview 34
- Default and Reset States 35
- Setting the Polarity 35
- Setting the Handshake Mode 36
- Inputting Data Bytes and Bits 37
- Multiple Port Operations 39
- Using Trace Memory 40
- I/O Module 43
- The CTL Line 44
- Using the Handshake Modes 46
- Chapter 4 47
- 0 or 1. Byte or 53
- Multiple Port 56
- Input/Output 56
- Command Reference 59
- SCPI Command Reference 62
- DISPlay Subsystem 63
- :MONitor[:STATe]? 65
- MEASure Subsystem 66
- Parameters 67
- Comments 69
- MEMory Subsystem 70
- :VME:STATe 73
- • *RST Condition: Set to OFF 73
- :VME:STATe? 73
- [SOURce:] Subsystem 74
- 0.000002. MAX returns 0.015 81
- DIGital:DATAn[:type]:POLarity 84
- DIGital:DATAn[:type]:TRACe 85
- DIGital:FLAGn:POLarity 88
- DIGital:FLAGn:POLarity? 88
- DIGital:TRACe:DEFine? 94
- DIGital:TRACe:DELete:ALL 94
- DIGital:TRACe:DELete[:NAME] 94
- STATus Subsystem 95
- :OPERation:CONDition? 96
- :OPERation:ENABle 96
- :OPERation:ENABle? 96
- :OPERation[:EVENt]? 96
- :QUEStionable:CONDition? 97
- :QUEStionable:ENABle 97
- :QUEStionable:ENABle? 97
- :QUEStionable[:EVENt]? 97
- SYSTem Subsystem 98
- • Related Commands: *ERR 99
- • *RST Condition: None 99
- :VERSion? 99
- IEEE 488.2 Common Commands 100
- Command Quick Reference 101
- Chapter 5 104
- Appendix A 105
- Information 107
- A16 Address Space 108
- Outside the Command 108
- Module or Mainframe 109
- Inside the Command 109
- Reset and Registers 111
- Register Definitions 111
- Appendix B 112
- Register Descriptions 113
- Port Interrupt 114
- Control Register 114
- Port Transfer 115
- Port Control/ 116
- Status Register 116
- Port Handshake 118
- Register 118
- Table B-4. Handshake Type 119
- Table B-5. Range Multipliers 119
- Port Normalization 120
- Programming Examples 123
- Resetting the 124
- Reading the 125
- ID, Device 125
- Type, and 125
- Registers 125
- C Version 126
- Writing an 127
- 8-Bit Byte 127
- Writing a 129
- 16-Bit Word 129
- Reading an 130
- PIR Interrupts 133
- Agilent E1330 133
- B Non-data 138
- Line I/O 138
- Embedded 142
- Computer 142
- Error Messages 145
- 144 Error Messages 146
- Appendix C 146
- Agilent E1330B User’s Manual 147
- 146 Index 148
- C (continued) 149
- 148 Index 150
- I (continued) 151
- M (continued) 152
- P (continued) 153
- R (continued) 154
- S (continued) 155
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