1. SLC-Aware IOC Review 1 SLC Executive, Message Service, Database Service Nov 10 and 11, 2004
Introduction
Functional Requirements (Stephanie)
SLC Executive (Diane)
Message Service (Diane)
Database Service (Debbie)
May need a third session to finish

2. Introduction Prototyping since June. Reviews are way overdue.
Team in place with weekly meetings:
Designers – Diane and Debbie
Requirement Specification – Steph, Dayle, Kristi, Linda, RonC (some will be designers when ready)
VMS/Unix Changes, Consultants – Tony, KenU, RonM
IOC CMLOG Additions - James

3. Integration with the SLC Control System
Alpha
All High
Level
Apps
Xterm
EPICS
W/S
Distributed
Applications
Xterm
Xterm
EPICS
W/S
Distributed
Applications
Xterm
EPICS
W/S
Distributed
Applications
EPICS
W/S
Distributed
Applications
EPICS WS
Distributed
High Level
Applications
CAS
CA Gateway
SLC Net over Ethernet (Data Transfer)
PNet (Pulse ID / User ID)
CA over Ethernet
(EPICS Protocol)
MPG
E V G P N E T
Micro
emulator
I/OC
(SLC-aware)
Micro
emulator
I/OC
(SLC-aware)
micro
Camac
I/O
Fast Feedback over ???
RF reference clock

4. SLC IOC – What it Will Do
Receive SLC messages and act on them in the same way as existing SLC micros for the following functions:
Gated ADC Data Acquisition (BPM) – beam synchronous
Device Control and Readback (MGNT)
Cluster Status (IOC Health and Status) (CSTR)
Maintain its part of the VMS SLC database:
Receive the entire SLC database at initialization time
Receive new setpoints at any time from the Alpha
Send readbacks back to the Alpha on request and periodically
Send setpoint changes made by external EPICS applications to the Alpha
Goal – same amount of network traffic as SLC micros

5. SLC IOC – What it Won’t Do
MPS
BITBUS Power Supply Control
KISNET Communication
Micro-to-Micro Communication via Alpha
SLC-style Analog Signal Monitoring
SLC-style Digital Input/Output
SLC-style Error Logging (use CMLOG instead)
SLC-style Klystron Interface
SLC-style Video Interface
SLC-style Timing Interface
Direct Hardware Access from VMS
Debugging from VMS
SLC-Style Fast Feedback Interface

6. A “Normal” IOC with no Links to a Legacy Control System
Unix Workstation
CMLOG
Server
A “Normal” IOC with no Links to a Legacy Control System
(ie, SPEAR IOC)
Console Users
IOC
CMLOG Client
IOC Shell
CA Users
IOC n
Data
Base
EPICS
EPICS
Resources HW

7. A “Normal” IOC with Loose Links to a Legacy Control System
Unix Workstation
SLC Alpha
SCP Users
Forward
Browser
Error
SCP
SCP
SCP
CMLOG
Server
A “Normal” IOC with Loose Links to a Legacy Control System
(ie, PEPII IOC)
Console Users
IOC
CMLOG Client
IOC Shell
CA Users
IOC n
Data
Base
EPICS
EPICS
Resources HW

8. SLC-Aware IOC – first add the SLC Executive
Unix Workstation
SLC Alpha
SCP Users
Forward
Browser
Error
SCP
SCP
SCP
CMLOG
Server
Console Users
IOC
CMLOG Client
SLC IOC Interface
SLC Exec
SLC
Resources
IOC Shell
CA Users
IOC n
Data
Base
EPICS
EPICS
Resources HW

9. SLC-Aware IOC – then add the SLC Message Service
Unix Workstation
SLC Alpha
SCP Users
Forward
Browser
Error
SCP
SCP
SCP
CMLOG
Server
SLC Linux Proxy
Replies
Requests
Console Users
IOC
Message
CMLOG Client
SLC IOC Interface
SLC Exec
SLC
Resources
IOC Shell
CA Users
IOC n
Data
Base
EPICS
EPICS
Resources HW

10. SLC-Aware IOC – then add the SLC Database Service
Unix Workstation
SLC Alpha
SCP Users
Micro n
SLC
Database
Forward
Browser
Error
SCP
SCP
SCP
DBGen,
Install
DBEX
CMLOG
Server
SLC Linux Proxy
NFS
Replies
Requests
DB Msgs
Acks
Console Users
IOC
Message
Database
CMLOG Client
SLC IOC Interface
SLC Exec
SLC
Resources
IOC Shell
SLC
Micro n
CA Users
IOC n
Data
Base
EPICS
EPICS
Resources HW

11. SLC-Aware IOC – finally add the Applications
Unix Workstation
SLC Alpha
SCP Users
Micro n
SLC
Database
Forward
Browser
Error
SCP
SCP
SCP
DBGen,
Install
DBEX
CMLOG
Server
SLC Linux Proxy
NFS
Replies
Requests
DB Msgs
Acks
Console Users
IOC
Message
Database
CMLOG Client
SLC IOC Interface
SLC Exec
SLC
Resources
IOC Shell
SLC
Micro n
CA Users
IOC n
Data
Base
EPICS
Device Control
EPICS
Resources
Gated ADC Acq
Cluster Status HW

12. General Requirements SLC and EPICS Operating System Proxy
Startup and Shutdown
Resource Management
Message Logging
Diagnostics
Software Development
LCLS-Specific Requirements

13. Message Service Requirements
Accept and Queue Messages from the Alpha
Send Reply Messages back to the Alpha
Process Messages with the TEST Function Code
TEST_EXISTENCE
TEST_ECHO and TEST_ECHO_MWORD
TEST_ERR_METER_RESET
TEST_IOC_SLCNOTIFY
Message Utilities

14. Database Service Requirements
Download and Create SLC Database at Startup
Accept and Process Database Changes and Up/Down Messages from DBEX
Send IOC-Generated Database Changes to DBEX
Wait for and Process Acknowledgements of Database Updates from DBEX
Database Utilities
IOC Shell Interface