Overview

This image provides an EPICS IOC for interaction. This IOC provides PVs (process variables) to interact with 6 independent motors, an areadetector camera producing 1024x1024 images, and 6 point-detectors. These point-sensors yield scalar values whose amplitude depends on the position of an associated simulated motor, with peak values produced at the motor positions indicated in the table below.

The pv names and descriptions are here:

PV Name	Description
sim:mtr1	Motor Record 1
sim:mtr2	Motor Record 2
sim:mtr3	Motor Record 3
sim:mtr4	Motor Record 4
sim:mtr5	Motor Record 5
sim:mtr6	Motor Record 6
-------	-------
sim:dev1:curr	scalar sensor 1; linked to 'sim:mtr1'; peak value at 1.5
sim:dev2:curr	scalar sensor 2; linked to 'sim:mtr2'; peak value at 0.5
sim:dev3:curr	scalar sensor 3; linked to 'sim:mtr3'; peak value at -0.5
sim:dev4:curr	scalar sensor 4; linked to 'sim:mtr4'; peak value at -1.5
sim:dev5:curr	scalar sensor 5; linked to 'sim:mtr5'; peak value at -2.5
sim:dev6:curr	scalar sensor 6; linked to 'sim:mtr6'; peak value at -1.0
-------	-------
sim:det:	areaDetector pv prefix; available plugins include 'image1:', 'cam1:', 'Stats1-5', etc
-------	-------
sim:fake:mtr-sp	setpoint of motor-like device; writes do not cause motion
sim:fake:mtr-i	position readback of motor-like device
sim:fake:mtr:go-cmd	if a new setpoint was entered, writing a '1' to this pv causes motion
sim:fake:mtr:stop-cmd	writing '1' to this pv will terminate in-progress motion
sim:fake:mtr:moving-sts	reports state, "Moving" (0) or "Done" (1)

Docker Image

A Docker image is available:

docker pull dchabot/simioc
docker run -d dchabot/simioc

Host Environment

To be enable host-access to the process variables published by the IOC, a couple of EPICS environment variables are required to be set:

export EPICS_CA_AUTO_ADDR_LIST=NO
export EPICS_CA_ADDR_LIST=172.17.255.255  # use `ifconfig`, or similar, to examine the host-container network configuration

Access to the IOC shell (iocsh) is available via procServ, on port 2048 of the docker image:

docker ps -a  # locate the name or ID of the simioc image
docker exec -it <image ID> bash  # launch a bash shell attached to the running image

root@<image ID> telnet localhost 2048  # enter the IOC shell