When installing an extension unit on the outer layer, refer to the following.
7.1.3 Installing multiple extension units in layers
When not installing an extension unit on the outer layer, cover the top of mounting screws (4
places) with accessory stickers in order to avoid receiving static electricity.
Keep the connector cover fixed.
Keep the sticker stuck as it is.
(3) GT15-75QBUSL, GT15-75QBUS2L, GT15-75ABUSL, GT15-75ABUS2L
Power OFF the GOT.
Remove the two extension unit covers of the GOT rear face.
Install the communication unit on the extension interface of the GOT rear face.
(When the extension unit is installed in GOT, remove the installed extension unit. And, do not
touch the board in the GOT when install the communication unit.)
7.1 Communication Unit
7.1.2 Installing procedure