9 - 50 VM600 MPS hardware manual (standard version) MAMPS-HW/E
Edition 17 - February 2018
Assigning alarm signals to relays on the RLC16 card
CONFIGURATION OF MPC4 / IOC4T CARDS
The IOC4T card drives the Raw Bus lines using open collector driver circuitry. These bus
lines do not have line terminations. (The principle is the same as for the Open Collector Bus,
see Figure 3-7.)
9.12.2.1 Configuration procedure (Raw Bus)
To configure a particular relay on the RLC16 card using the Raw Bus, proceed as follows:
1- Consult Table 9-7 (this lists the Raw Bus lines and jumpers associated with each relay).
2- Choose a free Raw Bus line from the four that are associated with that relay.
3- For the relay and Raw Bus line, set the appropriate jumper on the RLC16 card.
4- Set the appropriate jumper on the RLC16 card to configure the relay as normally
energised (NE) or normally de-energised (NDE).
NOTE: Make sure that either the NE or the NDE jumper is set. You cannot set both of them
together.
5- For the relay and Raw Bus line in question, set the appropriate jumper on the IOC4T
card.
6- Using the VM600 MPSx software, select the Discrete Outputs node (a child of the
Output Mapping node) in the tree structure (left). Then expand the RLC/Raw bus node
in the main window (right) and select the relay in question (between 1 and 16). See
Figure 9-36.
7- Configure the Channel, Output and Status fields of this window.
Configuration example
A user wants to assign the alarm signal "Danger+" generated on Output 1 of Channel 2 of a
given MPC4 card to Relay 7 on the RLC16 card. In addition, the user wants Relay 7 to be in
a normally energised (NE) state.
Table 9-7 shows that Raw Bus lines 35, 43, 51 and 59 are associated with Relay 7.
The choice of one of these four lines will be dictated by the hardware configuration of the
overall MPS, as certain bus lines may already be reserved for other functions. The desired
bus line is then selected by placing the appropriate jumper on the RLC16 card (J32, J33, J34
or J35 in the case of Relay 7).
Figure 9-36: VM600 MPS software window to configure the Raw Bus
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