IDEC MICROSmart FC6A Series User Manual page 144

2: P S
RODUCT PECIFICATIONS
(1) For the remote master, connect expansion port [Exp. port M] to expansion port 1 [Exp. port S1] on the remote slave
installed as node 1 using an Ethernet cable.
(2) To install node 2, connect expansion port 2 [Exp. port S2] on the remote slave of node 1 to expansion port 1 [Exp. port
S1] on the remote slave installed as node 2 using an Ethernet cable.
(3) To add more nodes, follow the same procedure and connect expansion port 2 [Exp. port S2] on the remote slave of
upstream node n to expansion port 1 [Exp. port S1] on the remote slave of downstream node n+1 using an Ethernet
cable. (n = 3 to 9)
(4) A maximum of 10 nodes can be used.
Do not connect an Ethernet cable to expansion port 2 [Exp. port S2] of the remote slave installed as the last node.
Notes:
The expansion interface remote master module can be connected only to the Plus CPU module and used on the basic expansion side.

A maximum of 10 expansion interface remote slave modules can be used within a single daisy chain connection setup.

Only one expansion interface module (expander) can be connected to each node.

The only connection that is supported between the remote master and remote slaves is a daisy chain connection. Star connections and tree

connections are not supported.
The maximum number of expansion modules that can be connected is 63 modules, but the maximum number of modules that can be

connected depends on the connected module. For details on restrictions when using expansion interface modules (remote master/slave), see
"Connection Restrictions When Expanding the PLC" on page 3-34.
Any devices other than the expansion interface remote master/slave modules do not operate even if they are connected to the expansion

port [Exp. port M] on the expansion interface remote master module or the expansion port 1 [Exp. port S1] or the expansion port 2 [Exp.
port S2] on the expansion interface remote slave module. If connected with an Ethernet cable, the expansion interface remote master
module does not recognize the expansion interface remote slave modules.
Part Names and Functions
■ Expansion Interface Remote Master Module
FC6A-EXM1M
(5) Expansion Connector 1
(7) Expansion Port [Exp. port M]
(1) Power LED [PWR]
This LED turns on when the power is supplied to the expansion interface remote master module from the internal power
supply of the Plus CPU module.
(2) Error LED [ERR]
This LED turns on when the following errors occur in the expansion interface remote master module.
When the cable breaks or the power supply to the expansion interface remote slave modules is turned off (LINK not established state

continues for 10 seconds or longer)
When there is an Ethernet communication error (when LINK is established and data is not normally received for a fixed amount of time or

longer even when one expansion interface remote slave module is connected)
 When there is an internal circuit error
When there is a CPU module error

(3) LINK LED [LNK]
This LED turns on when an expansion interface remote slave module is connected using an Ethernet cable.
2-114
(8) Ground Terminal
FC6A S MICROS
ERIES MART
(1) Power LED [PWR]
(2) Error LED [ERR]
(3) LINK LED [LNK]
(4) ACT LED [ACT]
(6) Expansion Connector 2
U ' M FC9Y-B1722
SER S ANUAL