Table of Contents

CAMAC and NIM standards and reports
1 Introduction
2 Interpretation
3 Basic features
4 Mechanical characteristics
4.1 The crate
4.1.1 Dimensions
4.1.2 Dataway connector sockets
4.1.3 Optional features of the crate
4.2 Plug-in units
4.2.1 Dimensions
4.2.2 Dataway connector plug
4.2.3 Insertion of the plug-in unit into the crate
4.2.4 Printed-wiring card
4.2.5 Other connectors
4.3 Adaptor for NIM units
4.4 The dataway
5 Use of the dataway lines
5.1 Commands
5.1.1 Station number N
5.1.2 Subaddress A8, A4, A2, A1
5.1.3 Function F16, F8, F4, F2, F1
5.2 Strobe signals S1 and S2
5.3 Data
5.3.1 Write lines W1-W24
5.3.2 Read lines R1-R24
5.4 Status information
5.4.1 Look-at-me L
5.4.1.1 Look-at-me: clear, disable, and test
5.4.1.2 Look-at-me: commands for access
5.4.1.3 Look-at-me: gating
5.4.1.4 Look-at-me: use for operations synchronization
          in block transfers, supplementary information
5.4.2 Busy B
5.4.3 Response Q
5.4.3.1 Use of Q for block transfers: address scan mode
5.4.3.2 Use of Q for block transfers: repeat mode
5.4.3.3 Use of Q for block transfers: stop mode
5.4.3.4 Use of Q for block transfers: stop-on-word
          mode, supplementary information
5.4.3.5 Use of Q for block transfers, supplementary
          information
5.4.4 Command accepted Z
5.5 Common controls Z, C, I
5.5.1 Initialize Z
5.5.2 Inhibit I
5.5.3 Clear C
5.6 Nonstandard connections P1-P7
5.6.1 Free bus-lines P1-P2
5.6.2 Patch contacts P3-P7
5.7 Power lines
6 Dataway commands
6.1 Read commands: function codes F(0) to F(7)
6.1.1 Read group 1 register, code F(0)
6.1.2 Read group 2 register, code F(1)
6.1.3 Read and clear group 1 register, code F(2)
6.1.4 Read complement of group 1 register, code F(3)
6.1.5 Other read commands, codes F(4)-F(7)
6.2 Control commands: function codes F(8)-F(15)
6.2.1 Test look-at-me, code F(8)
6.2.2 Clear group 1 register, code F(9)
6.2.3 Clear look-at-me, code F(10)
6.2.4 Clear group 2 register, code F(11)
6.2.5 Other control commands, codes F(12)-F(15)
6.3 Write commands: function codes F(16)-F(23)
6.3.1 Overwrite group 1 register, code F(16)
6.3.2 Overwrite group 2 register, code F(17)
6.3.3 Selective set group 1 register, code F(18)
6.3.4 Selective set group 2 register, code F(19)
6.3.5 Selective clear group 1 register, code F(21)
6.3.6 Selective clear group 2 register, code F(23)
6.3.7 Other write commands, codes F(20) and F(22)
6.4 Control commands: function codes F(24)-F(31)
6.4.1 Disable, code F(24)
6.4.2 Execute, code F(25)
6.4.3 Enable, code F(26)
6.4.4 Test status, code F(27)
6.4.5 Other control commands, codes F(28)-F(31)
6.5 External representation of the command
7 Signal standards
7.1 Digital signals on the dataway
7.1.1 Voltage standards for dataway signals
7.1.2 Current standards for dataway signals
7.1.3 Timing of dataway signals
7.1.3.1 Timing of dataway command operations
7.1.3.2 Timing of unaddressed operations
7.1.4 Digital signals on non standard connections
7.2 Other digital signals
7.2.1 Unterminated signals
7.2.2 Terminated signals
7.3 Analog signals
8 Power line standards
9 Forced-air ventilation (supplementary
          information)
10 Use of supplementary 6 V power (bus lines Y1,
          Y2)
Tables
1 Standard dataway usage
2 Contact allocation at a normal station
3 Contact allocation at the control station
4 The function codes
5 Voltage levels of dataway signals
6 Standards for signal currents through dataway
          connectors and for pull-up current sources
7 Current standard for patch contacts
8 Unterminated signals
9 Terminated signals
10 Power line standards
K5.4.3.5 Single module, single address block transfers
Figures
1 Unventilated crate: front view
2 Plan view of lower guides in crate
3 Crate side view: section d-d (fig 1)
4 Plug-in unit: side and rear views
5 Dataway connector: (5.1)-(5.3) plug:
          (5.4)-(5.8) socket
6 Ventilated crate: front view
7 Adaptor for NIM units
8 Typical printed wiring card
9 Timing of a dataway command operation
10 Timing of a dataway unaddressed operation
11 Some LAM structure options
12 Typical current sharing with supplementary 6 V
          power
13 Coaxial connector, type 50CM
K1A Standard arrangement
K1B Multiplicity of interfaces required by
          nonstandard arrangements
K1C Typical system with standard data bus
          (dataway) and dedicated interface
K1D Parallel highway system
K1E Serial highway system
K4.2.2 Typical dataway connector plug
K4.4 Dataway wiring, front view of twenty-five
          station crate
K5.4.1A Example of single-source look-at-me logic
K5.4.1B Example of multiple-source look-at-me logic
          showing operations on LAMs via subaddresses
K7.1.2 Current distribution, CAMAC dataway
Appendices
A Definitions of module and controller
B Digital signal classes and standard markings
          for coaxial connectors (supplementary
          information)
C Preferred connectors and contact assignments
D Typical crate mounted power supply and
          ventilation units with crate/power supply
          interface housing
E CAMAC categories
F Bibliography
Index

Abstract

This standard is intended to serve as a basis for a range of modular instrumentation capable of interfacing transducers and other devices to digital controllers for data and control. It consists of mechanical standards and signal standards that are sufficient to ensure physical and operational compatibility between units regardless of source.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN