orientation.
For the MODBUS Interface Module Kit: RS485/422:
a. MODBUS Interface Module RS485/422 (05701-A-0282).
b. Engineering Card Expansion Option EPROM integrated circuit
(05701-A-0385).
c. RAM expansion integrated circuit type HN6264ALP.
d. User Manual (05701-A-5006).
For the MODBUS Interface Module Kit RS232:
a. MODBUS Interface Module RS232 (05701-A-0287).
b. Engineering Card Expansion Option EPROM integrated circuit
(05701-A-0385).
c. RAM expansion integrated circuit type HN6264ALP.
d. User Manual (05701-A-5006).
3.3 INSTALLING THE MODBUS INTERFACE KIT
Except for Step (6) which applies to the RS485/422 Module only, the
following installation procedure applies to both versions of the MODBUS
Interface Kit:
(1) Isolate the SYSTEM 57 Rack from all power sources.
(2) Unscrew the two front panel screws that retain the Engineering
Card and using the extraction tool supplied with the system pull the
Engineering Card from the rack.
WARNING
The Upgrade EPROM can be permanently damaged by incorrect
insertion.
(3) Insert the Software Upgrade EPROM integrated circuit (05701-A-
0385) into the socket IC2 on the Engineering Card, ensuring that
pin 1 of the IC is aligned correctly with pin 1 of the socket and that
all pins are properly inserted into the socket.
Note: If an IC is already fitted to socket IC2, this should be
removed and discarded
