diff --git a/dist/fd/index.js b/dist/fd/index.js
index f95b90c..1140be4 100644
--- a/dist/fd/index.js
+++ b/dist/fd/index.js
@@ -3,11 +3,29 @@ var __importDefault = (this && this.__importDefault) || function (mod) {
     return (mod && mod.__esModule) ? mod : { "default": mod };
 };
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.FD = void 0;
+exports.FD = exports.Mode = exports.Action = void 0;
 const net_1 = __importDefault(require("net"));
 const log_1 = require("../log");
 const shell_1 = require("../shell");
 const delay_1 = require("../delay");
+var Action;
+(function (Action) {
+    Action[Action["NONE"] = 0] = "NONE";
+    Action[Action["LOAD"] = 1] = "LOAD";
+    Action[Action["DISPLAY"] = 2] = "DISPLAY";
+    Action[Action["STOP"] = 3] = "STOP";
+})(Action || (exports.Action = Action = {}));
+;
+var Mode;
+(function (Mode) {
+    Mode[Mode["RGB"] = 0] = "RGB";
+    Mode[Mode["BW"] = 1] = "BW";
+    Mode[Mode["INVERT"] = 2] = "INVERT";
+    Mode[Mode["BW_INVERT"] = 3] = "BW_INVERT";
+    Mode[Mode["RGB_CHANNELS"] = 4] = "RGB_CHANNELS";
+    Mode[Mode["INVERT_CHANNELS"] = 5] = "INVERT_CHANNELS";
+})(Mode || (exports.Mode = Mode = {}));
+;
 class FD {
     constructor(bin, width, height, host, port) {
         this.socketAvailable = false;
@@ -18,7 +36,7 @@ class FD {
         this.host = host;
         this.port = port;
         this.log = (0, log_1.createLog)('fd');
-        this.shell = new shell_1.Shell([this.bin, `${this.width}`, `${this.height}`], this.logstd.bind(this), this.logsterr.bind(this), null, true);
+        this.shell = new shell_1.Shell([this.bin, `${this.width}`, `${this.height}`, `${this.port}`], this.logstd.bind(this), this.logsterr.bind(this), null, true);
         this.startDisplay();
         this.startClient();
         this.test();
@@ -37,23 +55,16 @@ class FD {
         this.client.connect(this.port, this.host, async function () {
             this.socketConnected = true;
             this.log.info(`TCP socket client connected to ${this.host}:${this.port}`);
-            /*const data = {
-                action : 1,
-                image: 'filename.tif',
+            await (0, delay_1.delay)(1000);
+            const msg = {
+                action: Action.LOAD,
+                image: './test.jpg'
             };
-            this.log.info('SENDING');
-            this.log.info(data);
-            this.client.write(JSON.stringify(data));
-            await delay(2000);
-            data.action = 2;
-            this.log.info('SENDING');
-            this.log.info(data);
-            this.client.write(JSON.stringify(data));*/
+            this.send(msg);
+        }.bind(this));
+        this.client.on('data', function (data) {
+            this.receive(data);
         }.bind(this));
-        this.client.on('data', (data) => {
-            this.log.info('RECEIVED');
-            this.log.info(data.toString());
-        });
         this.client.on('close', () => {
             this.log.info('Closing connection');
         });
@@ -62,18 +73,49 @@ class FD {
         });
     }
     logstd(data) {
-        this.log.info(data);
+        this.log.info(`[shell] ${data}`);
         if (data.indexOf('TCP server listening on port') !== -1 && data.indexOf(`${this.port}`) !== -1) {
             this.socketAvailable = true;
         }
     }
     logsterr(data) {
-        this.log.error(data);
+        this.log.error(`[shell] ${data}`);
     }
     async test() {
         await (0, delay_1.delay)(10000);
         this.shell.kill();
     }
+    send(msg) {
+        const json = JSON.stringify(msg);
+        this.log.info(json);
+        this.client.write(json);
+    }
+    receive(json) {
+        const msg = JSON.parse(json);
+        this.log.info(msg);
+        return msg;
+    }
+    load(image, x, y, w, h) {
+        const msg = {
+            action: Action.LOAD,
+            image,
+            x,
+            y,
+            w,
+            h
+        };
+        this.send(msg);
+        return true;
+    }
+    display(image, exposure) {
+        const msg = {
+            action: Action.DISPLAY,
+            image,
+            exposure
+        };
+        this.send(msg);
+        return true;
+    }
 }
 exports.FD = FD;
 //# sourceMappingURL=index.js.map
\ No newline at end of file
diff --git a/dist/fd/index.js.map b/dist/fd/index.js.map
index 5e49c44..ee533ee 100644
--- a/dist/fd/index.js.map
+++ b/dist/fd/index.js.map
@@ -1 +1 @@
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\ No newline at end of file
+{"version":3,"file":"index.js","sourceRoot":"","sources":["../../src/fd/index.ts"],"names":[],"mappings":";;;;;;AACA,8CAAsB;AAEtB,gCAAkC;AAClC,oCAAiC;AACjC,oCAAiC;AAEjC,IAAY,MAKX;AALD,WAAY,MAAM;IACjB,mCAAI,CAAA;IACJ,mCAAI,CAAA;IACJ,yCAAO,CAAA;IACP,mCAAI,CAAA;AACL,CAAC,EALW,MAAM,sBAAN,MAAM,QAKjB;AAAA,CAAC;AAEF,IAAY,IAOX;AAPD,WAAY,IAAI;IACf,6BAAG,CAAA;IACH,2BAAE,CAAA;IACF,mCAAM,CAAA;IACN,yCAAS,CAAA;IACT,+CAAY,CAAA;IACZ,qDAAe,CAAA;AAChB,CAAC,EAPW,IAAI,oBAAJ,IAAI,QAOf;AAAA,CAAC;AAkBF,MAAa,EAAE;IAYd,YAAa,GAAW,EAAE,KAAc,EAAE,MAAe,EAAE,IAAa,EAAE,IAAa;QAH/E,oBAAe,GAAa,KAAK,CAAC;QAClC,oBAAe,GAAa,KAAK,CAAC;QAGzC,IAAI,CAAC,GAAG,GAAG,GAAG,CAAC;QACf,IAAI,CAAC,KAAK,GAAG,KAAK,CAAC;QACnB,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC;QACrB,IAAI,CAAC,IAAI,GAAG,IAAI,CAAC;QACjB,IAAI,CAAC,IAAI,GAAG,IAAI,CAAC;QACjB,IAAI,CAAC,GAAG,GAAG,IAAA,eAAS,EAAC,IAAI,CAAC,CAAC;QAC3B,IAAI,CAAC,KAAK,GAAG,IAAI,aAAK,CAAC,CAAE,IAAI,CAAC,GAAG,EAAE,GAAG,IAAI,CAAC,KAAK,EAAE,EAAE,GAAG,IAAI,CAAC,MAAM,EAAE,EAAE,GAAG,IAAI,CAAC,IAAI,EAAE,CAAE,EAAE,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,IAAI,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC;QACtJ,IAAI,CAAC,YAAY,EAAE,CAAC;QACpB,IAAI,CAAC,WAAW,EAAE,CAAC;QACnB,IAAI,CAAC,IAAI,EAAE,CAAC;IACb,CAAC;IAEO,KAAK,CAAC,YAAY;QACzB,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,uBAAuB,IAAI,CAAC,GAAG,EAAE,CAAC,CAAC;QACjD,IAAI,CAAC,KAAK,CAAC,OAAO,EAAE,CAAC;IACtB,CAAC;IAEO,KAAK,CAAC,WAAW;QACxB,IAAI,CAAC,MAAM,GAAG,IAAI,aAAG,CAAC,MAAM,EAAE,CAAC;QAC/B,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,oCAAoC,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,IAAI,KAAK,CAAC,CAAC;QAC/E,OAAO,CAAC,IAAI,CAAC,eAAe,EAAE,CAAC;YAC9B,MAAM,IAAA,aAAK,EAAC,EAAE,CAAC,CAAC;QACjB,CAAC;QACD,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,wBAAwB,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,IAAI,eAAe,CAAC,CAAC;QAC7E,IAAI,CAAC,MAAM,CAAC,OAAO,CAAC,IAAI,CAAC,IAAI,EAAE,IAAI,CAAC,IAAI,EAAE,KAAK;YAC9C,IAAI,CAAC,eAAe,GAAG,IAAI,CAAC;YAC5B,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,kCAAkC,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,IAAI,EAAE,CAAC,CAAC;YAC1E,MAAM,IAAA,aAAK,EAAC,IAAI,CAAC,CAAC;YAClB,MAAM,GAAG,GAAuB;gBAC/B,MAAM,EAAG,MAAM,CAAC,IAAI;gBACpB,KAAK,EAAG,YAAY;aACpB,CAAC;YACF,IAAI,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;QAChB,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;QAEd,IAAI,CAAC,MAAM,CAAC,EAAE,CAAC,MAAM,EAAE,UAAU,IAAa;YAC1C,IAAI,CAAC,OAAO,CAAC,IAAI,CAAC,CAAC;QACvB,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;QAEd,IAAI,CAAC,MAAM,CAAC,EAAE,CAAC,OAAO,EAAE,GAAG,EAAE;YACzB,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,oBAAoB,CAAC,CAAC;QACxC,CAAC,CAAC,CAAC;QAEH,IAAI,CAAC,MAAM,CAAC,EAAE,CAAC,OAAO,EAAE,CAAC,GAAW,EAAE,EAAE;YACpC,IAAI,CAAC,GAAG,CAAC,KAAK,CAAC,QAAQ,EAAE,GAAG,CAAC,CAAC;QAClC,CAAC,CAAC,CAAC;IACJ,CAAC;IAEO,MAAM,CAAE,IAAa;QAC5B,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,WAAW,IAAI,EAAE,CAAC,CAAC;QACjC,IAAI,IAAI,CAAC,OAAO,CAAC,8BAA8B,CAAC,KAAK,CAAC,CAAC,IAAI,IAAI,CAAC,OAAO,CAAC,GAAG,IAAI,CAAC,IAAI,EAAE,CAAC,KAAK,CAAC,CAAC,EAAE,CAAC;YAChG,IAAI,CAAC,eAAe,GAAG,IAAI,CAAC;QAC7B,CAAC;IACF,CAAC;IAEO,QAAQ,CAAE,IAAa;QAC9B,IAAI,CAAC,GAAG,CAAC,KAAK,CAAC,WAAW,IAAI,EAAE,CAAC,CAAC;IACnC,CAAC;IAEO,KAAK,CAAC,IAAI;QACjB,MAAM,IAAA,aAAK,EAAC,KAAK,CAAC,CAAC;QACnB,IAAI,CAAC,KAAK,CAAC,IAAI,EAAE,CAAC;IACnB,CAAC;IAEO,IAAI,CAAE,GAAuB;QACpC,MAAM,IAAI,GAAY,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,CAAC;QAC1C,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;QACpB,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,IAAI,CAAC,CAAC;IACzB,CAAC;IAEO,OAAO,CAAE,IAAa;QAC7B,MAAM,GAAG,GAAuB,IAAI,CAAC,KAAK,CAAC,IAAI,CAAC,CAAC;QACjD,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;QACnB,OAAO,GAAG,CAAC;IACZ,CAAC;IAEM,IAAI,CAAE,KAAc,EAAE,CAAU,EAAE,CAAU,EAAE,CAAU,EAAE,CAAU;QAC1E,MAAM,GAAG,GAAuB;YAC/B,MAAM,EAAG,MAAM,CAAC,IAAI;YACpB,KAAK;YACL,CAAC;YACD,CAAC;YACD,CAAC;YACD,CAAC;SACD,CAAC;QACF,IAAI,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;QACf,OAAO,IAAI,CAAC;IACb,CAAC;IAEM,OAAO,CAAE,KAAc,EAAE,QAAmB;QAClD,MAAM,GAAG,GAAuB;YAC/B,MAAM,EAAG,MAAM,CAAC,OAAO;YACvB,KAAK;YACL,QAAQ;SACR,CAAC;QACF,IAAI,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;QACf,OAAO,IAAI,CAAC;IACb,CAAC;CACD;AA/GD,gBA+GC"}
\ No newline at end of file
diff --git a/src/fd/index.ts b/src/fd/index.ts
index 4f30fb4..f14f42c 100644
--- a/src/fd/index.ts
+++ b/src/fd/index.ts
@@ -5,6 +5,38 @@ import { createLog } from '../log'
 import { Shell } from '../shell';
 import { delay } from '../delay';
 
+export enum Action {
+	NONE,
+	LOAD,
+	DISPLAY,
+	STOP
+};
+
+export enum Mode {
+	RGB,
+	BW,
+	INVERT,
+	BW_INVERT,
+	RGB_CHANNELS,
+	INVERT_CHANNELS
+};
+
+export interface fdOutgoingMessage {
+	action : Action,
+	image : string,
+	mode? : Mode,
+	x? : number,
+	y? : number,
+	w? : number,
+	h? : number,
+	exposure? : number[]
+}
+
+export interface fdIncomingMessage {
+	action : Action,
+	success : boolean
+}
+
 export class FD {
 	private bin : string;
 	private width : number;
@@ -24,7 +56,7 @@ export class FD {
 		this.host = host;
 		this.port = port;
 		this.log = createLog('fd');
-		this.shell = new Shell([ this.bin, `${this.width}`, `${this.height}` ], this.logstd.bind(this), this.logsterr.bind(this), null, true);
+		this.shell = new Shell([ this.bin, `${this.width}`, `${this.height}`, `${this.port}` ], this.logstd.bind(this), this.logsterr.bind(this), null, true);
 		this.startDisplay();
 		this.startClient();
 		this.test();
@@ -45,24 +77,17 @@ export class FD {
 		this.client.connect(this.port, this.host, async function () {
 			this.socketConnected = true;
 			this.log.info(`TCP socket client connected to ${this.host}:${this.port}`);
-			/*const data = {
-				action : 1,
-				image: 'filename.tif',
+			await delay(1000);
+			const msg : fdOutgoingMessage = {
+				action : Action.LOAD,
+				image : './test.jpg'
 			};
-			this.log.info('SENDING');
-			this.log.info(data);
-			this.client.write(JSON.stringify(data));
-			await delay(2000);
-			data.action = 2;
-			this.log.info('SENDING');
-			this.log.info(data);
-			this.client.write(JSON.stringify(data));*/
+			this.send(msg);
 		}.bind(this));
 
-		this.client.on('data', (data : string) => {
-		    this.log.info('RECEIVED');
-		    this.log.info(data.toString());
-		});
+		this.client.on('data', function (data : string) {
+		    this.receive(data);
+		}.bind(this));
 
 		this.client.on('close', () => {
 		    this.log.info('Closing connection');
@@ -73,20 +98,64 @@ export class FD {
 		});
 	}
 
-	private logstd ( data : string ) {
-		this.log.info(data);
+	private logstd (data : string ) {
+		this.log.info(`[shell] ${data}`);
 		if (data.indexOf('TCP server listening on port') !== -1 && data.indexOf(`${this.port}`) !== -1) {
 			this.socketAvailable = true;
 		}
 	}
 
-	private logsterr ( data : string) {
-		this.log.error(data);
+	private logsterr (data : string) {
+		this.log.error(`[shell] ${data}`);
 	}
 
 	private async test () {
 		await delay(10000);
 		this.shell.kill();
 	}
+
+	private send (msg : fdOutgoingMessage) {
+		const json : string = JSON.stringify(msg);
+		this.log.info(json);
+		this.client.write(json);
+	}
+
+	private receive (json : string) : fdIncomingMessage {
+		const msg : fdIncomingMessage = JSON.parse(json);
+		this.log.info(msg);
+		return msg;
+	}
+
+	public async load (image : string, x : number, y : number, w : number, h : number) : Promise<boolean> {
+		const msg : fdOutgoingMessage = {
+			action : Action.LOAD,
+			image,
+			x,
+			y,
+			w,
+			h
+		};
+		this.send(msg);
+		return true;
+	}
+
+	public async display (image : string, exposure : number[]) : Promise<boolean> {
+		const msg : fdOutgoingMessage = {
+			action : Action.DISPLAY,
+			image,
+			exposure
+		};
+		this.send(msg);
+		return true;
+	}
+
+	public async stop (image : string) : Promise<boolean> {
+		const msg : fdOutgoingMessage = {
+			action : Action.STOP,
+			image
+		};
+		this.send(msg);
+		return true;
+	}
 }