DESCRIPTION AND OPERATION
CTT INTERFACE
2 - 4
I-E96-221A
®
A reset switch (SW1) accessed through the faceplate resets the
module.
•
Jumpers J1 through J3 enable handshake functions for
the EWS port.
•
Jumper J4 connects the EWS connector cable shield to
ground.
•
Jumper array J5 selects DTE, DCE or loopback operating
mode for the DB-25 EWS port (P4).
•
Jumper array J6 selects DTE, DCE, or loopback operating
mode for the DB-9 connector mounted on the circuit board.
•
Jumper J11 allows the CTT terminal to connect directly to
the module bus therefore disabling IMCPM02 module con-
trol. Jumper J11 causes the IMCPM02 module to operate
as an IMCPM01 module.
•
Jumper J12 disconnects -30 VDC from the module when
installing it in an MMU backplane with modules that
require -30 VDC. The Controlway can not be used in sys-
tems that use -30 VDC.
CTT INTERFACE
The IMCPM02 module communicates with the CTT terminal
via the round five pin connector on the faceplate. Messages
received from the CTT terminal are transmitted on Controlway,
but using the source module address of the IMCPM02 module
in place of the module address of the CTT terminal. Only
replies to messages initiated by the CTT terminal are transmit-
ted to the CTT terminal. A CTT terminal connected to the Con-
trolway through an IMCPM02 module is a message initiating
device only. The IMCPM02 module cannot relay messages to
the CTT terminal that are initiated from other modules within
the process control unit.
